Garmin 310XT Review

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The Garmin 310XT represents great value for money, providing all the key features you're likely to need, though it misses out on some of the cool new abilities of the more recent watches. The 310XT is now two generations old, having been replaced by the Garmin 910XT and then the Garmin 920XT. The Garmin 910XT is better, but not worth the extra cost for most runners, while the 920XT is a rather larger leap forward. If you want something smaller, then the Garmin 610 is also excellent value for money, or the later Garmin 620. While the 310XT is rather large by today's standards, I have tiny wrists and it fits me well. (It's a better fit for tiny wrists than the Polar V800 for instance.) For a simple evaluation of a GPS watch, I look at how well it can answer some basic questions:

  • How far did I run? This is the most basic question, and the Garmin 310XT has good GPS accuracy. It will give you a better idea than most watches how far you've gone.
  • How fast am I running? Knowing how fast you're running can be a nice to know, or it can be vital for your training or race performance. Because of the nature of GPS, watches that rely on GPS signal alone tend to have serious problems with current pace. Thankfully, the 310XT is one of the few devices that will display current Pace From A Footpod while getting all other data from GPS.
  • Where am I? The Garmin 310XT has some basic navigation functions. There are no maps, but you'll have an outline of the route you've run and you can download a course, which I've found useful on occasion.
  • What's my cadence? Cadence is one of the most critical and often overlooked aspects of running. If you get your Cadence right, many other things naturally fall into place. The Garmin 310XT supports Cadence via a Footpod, but has no alerts nor does it have an internal accelerometer to estimate Cadence.

For ultramarathon running the Garmin 310XT has the battery life to suffice for shorter ultras, but if you expect to be moving during the Second Dawn you may need to look elsewhere. (You can turn off GPS and use a Footpod; if you're okay with that compromise, the 310XT will last for days.) See Watches for Ultrarunning for more details.

Garmin 310XT

1 Garmin 310XT Pros

  • The 310XT is great value for money at this price level.
  • A great feature is the ability to use the optional Footpod to display your current pace while using GPS for overall pace, distance and route. Only the 310XT, 910XT and Garmin 610 can do this.
  • The 310XT has good GPS Accuracy, and is better than many more recent devices.
  • When the 310XT starts up in the same location as the last run it will acquire satellites quickly, though if you've travelled 100s of miles/Km then it can take quite a few minutes. The optional Footpod also improves GPS accuracy.
  • The larger size allows for a larger display that's easy to read, even with four data items displayed.
  • The 310XT will display the route you've run, though it does not have any built in maps. You can also upload courses and display them which is great for trail ultramarathons.
  • There are several optional extras for the 310XT, including a Footpod and heart rate strap. For cyclists there is also a speed/cadence sensor and it works with various power sensors.

2 Garmin 310XT Cons

  • Some people find the 310XT to be rather large, and it is much larger than a normal watch.
  • The battery life is good for about 16-20 hours, which is enough for most people. Ultrarunners doing 100 mile or longer races will find this a problem, though it is possible to recharge it while in use.
  • For races where the GPS track is not important, you can extend the battery life by turning off the GPS receiver and use the Footpod. After 24 hours of running I still have most of the battery left. If you're running on a reasonable smooth surface, the Footpod is often more accurate than GPS.

3 What's Missing

While I don't consider these missing features as 'cons', it's worth understanding the features that are missing compared with other watches.

  • GPS Pre-cache. Most of the time, even GPS watches without satellite pre-cache will locate the GPS signal quite quickly provided you've not traveled far from the position of the watch was last used. However, those times when you have traveled, a GPS watch without satellite pre-cache can take several minutes to locate the GPS signal. This can be remarkably annoying when you're freezing cold and wanting to start your run to warm up.
  • Altimeter. GPS is far less accurate vertically than horizontally, so a barometric altimeter can provide a much better idea of your ascent and descent. It can also be useful for navigation if you're ascending or descending a mountain. In some races I've been far more interested in how much ascent is left rather than the distance to the top.
  • Downloadable Apps. Smart watches have got is used to the idea of a device that can be extended with new functionality, and this concept is being introduced to running watches.
  • Extended battery life. Some porches can extend the battery life by turning the GPS reception off for short periods. This can dramatically reduce GPS accuracy, but it's a useful trade-off for some ultramarathons.
  • Training Effect. The Firstbeat Training Effect gives you a sense of how hard each workout is, and this sometimes includes the time for recovery.
  • Graphs. Instead of simply displaying a numeric value for things like heart rate, some watches will display a graph of the value over time, giving you a sense of how things are progressing.
  • Running Dynamics. Some of the newer Garmin watches can show and record Vertical Oscillation (VO) and Ground Contact Time (GCT).
  • Alerts. Some watches will alert you when a metric is out of range. The alert for Cadence is really useful and one of my favorite features.
  • WiFi/Bluetooth Uploads. While the automatic upload of workouts via WiFi or Bluetooth to a Smartphone is nice, the upload will typically only go to the manufacturers web site.
  • Web Configuration. Some watches allow you to setup the configuration via a web site, and then download your changes. This is vastly easier than fiddling with the watch.
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This review was made possible by readers like you buying products via my links. I buy all the products I review through normal retail channels, which allows me to create unbiased reviews free from the influence of reciprocity, or the need to keep vendors happy. It also ensures I don't get "reviewer specials" that are better than the retail versions.

4 Comparison Table

I evaluate running watches in three distinct ways. Firstly, you can use a watch on its own, without any kind of Footpod. This is probably the most common way runners use their watch, but you miss out on a lot. The second rating is with a standard Footpod that is available quite cheaply. These Footpod's can be reasonably accurate once the calibrated, but calibration is a little tedious. The final evaluation is with the Stryd Footpod, which is vastly more accurate than any other type of Footpod, or and more accurate than GPS. The table below looks at the score, and the value for money of each watch for each of the three conditions. (I’ve also tested the Apple Watch 3, but I’ve not included it in these tables as it’s not really a running watch.)

Review With Stryd Score With Stryd Value for money With Footpod Score With Footpod Value for money Without Footpod Score Without Footpod Value for money Price at Amazon.com
Garmin Epix Review 47 4.5 31 3.9 23 3.4 Error: Could not parse data from Amazon!
Garmin Fenix 5X Review 47 2.9 32 2.3 24 1.9 Error: Could not parse data from Amazon!
Garmin Fenix 3 Review 45 3.8 28 3.1 24 3 Error: Could not parse data from Amazon!
Garmin 935 Review 45 3.6 30 3 22 2.4 Error: Could not parse data from Amazon!
Garmin Vivoactive HR Review 40 4.9 21 3.8 17 3.8 Error: Could not parse data from Amazon!
Garmin 920XT Review 39 4.4 30 4.7 24 4.5 Error: Could not parse data from Amazon!
Suunto Spartan Ultra Review 37 2.6 27 2.3 23 2.1 Error: Could not parse data from Amazon!
Garmin Vivoactive 3 Review 36 4 19 2.9 15 2.8 Error: Could not parse data from Amazon!
Garmin Vivoactive Review 34 5.1 14 3.4 10 3.3 Error: Could not parse data from Amazon!
Suunto Spartan Trainer Review 34 3.9 23 3.7 18 3.4 Error: Could not parse data from Amazon!
Polar V800 Review 33 2.8 26 2.8 22 2.7 Error: Could not parse data from Amazon!
Suunto Ambit2 Review 32 3.9 25 4.3 21 4.5 Error: Could not parse data from Amazon!
Suunto Ambit3 Peak Review 32 3.4 29 4.1 25 4.2 Error: Could not parse data from Amazon!
Garmin Fenix 2 Review 31 2.9 22 2.7 18 2.5 Error: Could not parse data from Amazon!
Suunto Ambit3 Run Review 30 4 27 5.5 23 5.9 Error: Could not parse data from Amazon!
Suunto Ambit2 R Review 30 3.5 23 3.8 19 3.8 Error: Could not parse data from Amazon!
Garmin 235 Review 28 2.9 20 2.8 12 2 Error: Could not parse data from Amazon!
Garmin 620 Review 27 3.8 24 5.1 20 5.6 Error: Could not parse data from Amazon!
Garmin 910XT Review 26 3.9 26 6.1 21 6.7 Error: Could not parse data from Amazon!
Garmin 310XT Review 25 4.6 24 8.3 18 10 Error: Could not parse data from Amazon!
Polar M400 Review 25 4.3 15 4.5 11 4.9 Error: Could not parse data from Amazon!
Garmin 225 Review 25 3.8 13 3.1 9 2.9 Error: Could not parse data from Amazon!
TomTom Cardio Runner Review 25 3.3 10 2 10 2.5 Error: Could not parse data from Amazon!
Polar M430 Review 25 3.2 15 2.9 11 2.7 Error: Could not parse data from Amazon!
Garmin 610 Review 24 3.3 20 4.3 14 3.9 Error: Could not parse data from Amazon!
Leikr Review 10 1 20 2.5 14 2 Leikr ($380)
Epson SF-510 Review 4 0.7 6 2 6 3 Error: Could not parse data from Amazon!
Epson SF-810 Review 4 0.6 6 1.6 6 2.3 Error: Could not parse data from Amazon!
Garmin 10 Review 2 0.3 2 0.6 2 0.9 Error: Could not parse data from Amazon!

The score is the sum of how well each watch can answer the four basic questions (how far, how fast, where are you, what's your cadence), plus some bonus points.

  1. The "How far you've run" will be based on GPS only for "without Footpod" and "with Standard Footpod", but based on Stryd if supported in the "with Stryd Footpod" table..
  2. How fast you're running assumes you're using a Footpod if it's supported, otherwise the rating is 0-2 based on GPS accuracy.
  3. The "Where are you?" is based on various navigation features such as back to start, breadcrumbs, and preloaded maps. For some watches, you have to turn GPS off to get the benefit of Stryd, so those watches have worse "where are you scores" with Stryd than without.
  4. The cadence score uses 1 point for an internal cadence sensor, 2 points for footpod support, 1 point for support from chest strap cadence, and 1 point for cadence alerts.
  5. I give 1-2 bonus points for application support, 1-2 bonus points for data upload, 1-2 bonus points for Optical Heart Rate Monitoring, and 0-1 bonus points for battery life.
  6. Value for money is the score divided by the price (at the time I last updated the table.) Your needs may be different, so you might weight the different aspects of the watches differently, or be basing your decision on different criteria totally. Hopefully this table will give you a good starting point for your decision.

4.1 Score Breakdown without a Footpod

Review Score Value for money6 How far did
you run?1
How fast are
you running?2
Where are
you?3
What's your
cadence?4
Bonus Points5 class="unsortable" |

Price at Amazon.com

Suunto Ambit3 Peak Review 25 4.2 8 3 6 2 6 Error: Could not parse data from Amazon!
Garmin 920XT Review 24 4.5 1 2 7 6 8 Error: Could not parse data from Amazon!
Garmin Fenix 3 Review 24 3 2 1 7 6 8 Error: Could not parse data from Amazon!
Garmin Fenix 5X Review 24 1.9 1 0 9 6 8 Error: Could not parse data from Amazon!
Suunto Ambit3 Run Review 23 5.9 8 3 5 2 5 Error: Could not parse data from Amazon!
Garmin Epix Review 23 3.4 0 0 9 6 8 Error: Could not parse data from Amazon!
Suunto Spartan Ultra Review 23 2.1 8 2 6 2 5 Error: Could not parse data from Amazon!
Polar V800 Review 22 2.7 9 4 3 2 4 Error: Could not parse data from Amazon!
Garmin 935 Review 22 2.4 1 0 7 6 8 Error: Could not parse data from Amazon!
Garmin 910XT Review 21 6.7 5 3 6 2 5 Error: Could not parse data from Amazon!
Suunto Ambit2 Review 21 4.5 4 3 6 2 6 Error: Could not parse data from Amazon!
Garmin 620 Review 20 5.6 3 2 2 6 7 Error: Could not parse data from Amazon!
Suunto Ambit2 R Review 19 3.8 4 3 5 2 5 Error: Could not parse data from Amazon!
Garmin 310XT Review 18 10 7 2 4 0 5 Error: Could not parse data from Amazon!
Suunto Spartan Trainer Review 18 3.4 5 3 4 2 4 Error: Could not parse data from Amazon!
Garmin Fenix 2 Review 18 2.5 1 0 6 6 5 Error: Could not parse data from Amazon!
Garmin Vivoactive HR Review 17 3.8 0 0 2 6 9 Error: Could not parse data from Amazon!
Garmin Vivoactive 3 Review 15 2.8 0 0 4 4 7 Error: Could not parse data from Amazon!
Garmin 610 Review 14 3.9 3 2 3 2 4 Error: Could not parse data from Amazon!
Leikr Review 14 2 5 2 4 0 3 Leikr ($380)
Garmin 235 Review 12 2 0 0 2 2 8 Error: Could not parse data from Amazon!
Polar M400 Review 11 4.9 3 1 1 2 4 Error: Could not parse data from Amazon!
Polar M430 Review 11 2.7 3 1 1 2 4 Error: Could not parse data from Amazon!
Garmin Vivoactive Review 10 3.3 0 0 0 6 4 Error: Could not parse data from Amazon!
TomTom Cardio Runner Review 10 2.5 2 1 0 2 5 Error: Could not parse data from Amazon!
Garmin 225 Review 9 2.9 1 1 0 2 5 Error: Could not parse data from Amazon!
Epson SF-510 Review 6 3 0 0 0 2 4 Error: Could not parse data from Amazon!
Epson SF-810 Review 6 2.3 1 0 0 2 3 Error: Could not parse data from Amazon!
Garmin 10 Review 2 0.9 0 0 0 0 2 Error: Could not parse data from Amazon!

4.2 Score Breakdown with a Standard Footpod

Review Score Value for money6 How far did
you run?1
How fast are
you running?2
Where are
you?3
What's your
cadence?4
Bonus Points5 class="unsortable" |

Price at Amazon.com

Garmin Fenix 5X Review 32 2.3 1 4 9 10 8 Error: Could not parse data from Amazon!
Garmin Epix Review 31 3.9 0 4 9 10 8 Error: Could not parse data from Amazon!
Garmin 920XT Review 30 4.7 1 4 7 10 8 Error: Could not parse data from Amazon!
Garmin 935 Review 30 3 1 4 7 10 8 Error: Could not parse data from Amazon!
Suunto Ambit3 Peak Review 29 4.1 8 3 6 6 6 Error: Could not parse data from Amazon!
Garmin Fenix 3 Review 28 3.1 2 1 7 10 8 Error: Could not parse data from Amazon!
Suunto Ambit3 Run Review 27 5.5 8 3 5 6 5 Error: Could not parse data from Amazon!
Suunto Spartan Ultra Review 27 2.3 8 2 6 6 5 Error: Could not parse data from Amazon!
Garmin 910XT Review 26 6.1 5 4 6 6 5 Error: Could not parse data from Amazon!
Polar V800 Review 26 2.8 9 4 3 6 4 Error: Could not parse data from Amazon!
Suunto Ambit2 Review 25 4.3 4 3 6 6 6 Error: Could not parse data from Amazon!
Garmin 310XT Review 24 8.3 7 4 4 4 5 Error: Could not parse data from Amazon!
Garmin 620 Review 24 5.1 3 2 2 10 7 Error: Could not parse data from Amazon!
Suunto Ambit2 R Review 23 3.8 4 3 5 6 5 Error: Could not parse data from Amazon!
Suunto Spartan Trainer Review 23 3.7 5 4 4 6 4 Error: Could not parse data from Amazon!
Garmin Fenix 2 Review 22 2.7 1 0 6 10 5 Error: Could not parse data from Amazon!
Garmin Vivoactive HR Review 21 3.8 0 0 2 10 9 Error: Could not parse data from Amazon!
Garmin 610 Review 20 4.3 3 4 3 6 4 Error: Could not parse data from Amazon!
Garmin 235 Review 20 2.8 0 4 2 6 8 Error: Could not parse data from Amazon!
Leikr Review 20 2.5 5 4 4 4 3 Leikr ($380)
Garmin Vivoactive 3 Review 19 2.9 0 0 4 8 7 Error: Could not parse data from Amazon!
Polar M400 Review 15 4.5 3 1 1 6 4 Error: Could not parse data from Amazon!
Polar M430 Review 15 2.9 3 1 1 6 4 Error: Could not parse data from Amazon!
Garmin Vivoactive Review 14 3.4 0 0 0 10 4 Error: Could not parse data from Amazon!
Garmin 225 Review 13 3.1 1 1 0 6 5 Error: Could not parse data from Amazon!
TomTom Cardio Runner Review 10 2 2 1 0 2 5 Error: Could not parse data from Amazon!
Epson SF-510 Review 6 2 0 0 0 2 4 Error: Could not parse data from Amazon!
Epson SF-810 Review 6 1.6 1 0 0 2 3 Error: Could not parse data from Amazon!
Garmin 10 Review 2 0.6 0 0 0 0 2 Error: Could not parse data from Amazon!

4.3 Score Breakdown with a Stryd Footpod

Review Score Value for money6 How far did
you run?1
How fast are
you running?2
Where are
you?3
What's your
cadence?4
Bonus Points5 class="unsortable" |

Price at Amazon.com

Garmin Epix Review 47 4.5 10 10 9 10 8 Error: Could not parse data from Amazon!
Garmin Fenix 5X Review 47 2.9 10 10 9 10 8 Error: Could not parse data from Amazon!
Garmin Fenix 3 Review 45 3.8 10 10 7 10 8 Error: Could not parse data from Amazon!
Garmin 935 Review 45 3.6 10 10 7 10 8 Error: Could not parse data from Amazon!
Garmin Vivoactive HR Review 40 4.9 10 10 1 10 9 Error: Could not parse data from Amazon!
Garmin 920XT Review 39 4.4 10 10 1 10 8 Error: Could not parse data from Amazon!
Suunto Spartan Ultra Review 37 2.6 10 10 6 6 5 Error: Could not parse data from Amazon!
Garmin Vivoactive 3 Review 36 4 10 10 1 8 7 Error: Could not parse data from Amazon!
Garmin Vivoactive Review 34 5.1 10 10 0 10 4 Error: Could not parse data from Amazon!
Suunto Spartan Trainer Review 34 3.9 10 10 4 6 4 Error: Could not parse data from Amazon!
Polar V800 Review 33 2.8 10 10 3 6 4 Error: Could not parse data from Amazon!
Suunto Ambit2 Review 32 3.9 10 10 6 0 6 Error: Could not parse data from Amazon!
Suunto Ambit3 Peak Review 32 3.4 10 10 6 0 6 Error: Could not parse data from Amazon!
Garmin Fenix 2 Review 31 2.9 10 10 6 0 5 Error: Could not parse data from Amazon!
Suunto Ambit3 Run Review 30 4 10 10 5 0 5 Error: Could not parse data from Amazon!
Suunto Ambit2 R Review 30 3.5 10 10 5 0 5 Error: Could not parse data from Amazon!
Garmin 235 Review 28 2.9 10 10 0 0 8 Error: Could not parse data from Amazon!
Garmin 620 Review 27 3.8 10 10 0 0 7 Error: Could not parse data from Amazon!
Garmin 910XT Review 26 3.9 10 10 1 0 5 Error: Could not parse data from Amazon!
Garmin 310XT Review 25 4.6 10 10 0 0 5 Error: Could not parse data from Amazon!
Polar M400 Review 25 4.3 10 10 1 0 4 Error: Could not parse data from Amazon!
Garmin 225 Review 25 3.8 10 10 0 0 5 Error: Could not parse data from Amazon!
TomTom Cardio Runner Review 25 3.3 10 10 0 0 5 Error: Could not parse data from Amazon!
Polar M430 Review 25 3.2 10 10 1 0 4 Error: Could not parse data from Amazon!
Garmin 610 Review 24 3.3 10 10 0 0 4 Error: Could not parse data from Amazon!
Leikr Review 10 1 5 2 0 0 3 Leikr ($380)
Epson SF-510 Review 4 0.7 0 0 0 0 4 Error: Could not parse data from Amazon!
Epson SF-810 Review 4 0.6 1 0 0 0 3 Error: Could not parse data from Amazon!
Garmin 10 Review 2 0.3 0 0 0 0 2 Error: Could not parse data from Amazon!

4.4 Basic Features

Review

Released GPS
Accuracy
Weight (oz) Size (CM3) Display (mm) Resolution (Pixels) Waterproofing Heart Rate
Monitor
Cadence Data Upload
Garmin Epix Review 2015 6.2 3.0 48 29 x 21 (609mm2) 205 x 148 (30.3K total) Good (50m) Yes Internal/Footpod/Heart Rate Monitor/Alert Yes
Garmin Fenix 5X Review 2017 5.6 3.5 36 30.5 (round) (731mm2) 240 diameter (45.2K total) Good (100m) Yes Internal/Footpod/Heart Rate Monitor/Alert Yes
Garmin Fenix 3 Review 2015 6.2 2.9 33 30 (round) (726mm2) 218 diameter (37.3K total) Good (100m) Yes Internal/Footpod/Heart Rate Monitor/Alert Yes
Garmin 935 Review 2017 5.6 1.7 24 30.5 (round) (731mm2) 240 diameter (45.2K total) Good (100m) Yes Internal/Footpod/Heart Rate Monitor/Alert Yes
Garmin Vivoactive HR Review 2016 4.9 1.7 19 21 x 29 (609mm2) 148 x 205 (30.3K total) Good (50m) Yes (+OHRM) Internal/Footpod/Heart Rate Monitor/Alert Yes
Garmin 920XT Review 2014 6.6 2.2 35 29 x 21 (609mm2) 205 x 148 (30.3K total) Good (50m) Yes Internal/Footpod/Heart Rate Monitor/Alert Yes
Garmin Vivoactive 3 Review 2017 1.5 17 30.5 (round) (731mm2) 240 diameter (45.2K total) Good (50m) Yes (+OHRM) Internal/Footpod Yes
Garmin Vivoactive Review 2015 5.4 1.3 13 29 x 21 (592mm2) 205 x 148 (30.3K total) Good (50m) Yes Internal/Footpod/Heart Rate Monitor/Alert Yes
Suunto Spartan Trainer Review 2017 7.8 2.0 25 24 x 23 (529mm2) 128 diameter (12.9K total) Good (50m) Yes (+OHRM) Internal/Footpod Yes
Suunto Ambit2 Review 2013 7.6 3.1 30 29 (round) (661mm2) 128 diameter (12.9K total) Good (100m) Yes Internal/Footpod Yes
Suunto Ambit3 Peak Review 2014 7.9 2.9 30 29 (round) (661mm2) 128 diameter (12.9K total) Good (100m) Yes Internal/Footpod Yes
Suunto Spartan Ultra Review 2016 7.1 2.7 38 32 (round) (804mm2) 320 diameter (80.4K total) Good (100m) Yes Internal (Limited Footpod) Yes
Garmin Fenix 2 Review 2014 5.7 3.2 32 31 (round) (755mm2) 70 diameter (3.8K total) Good (50m) Yes Internal/Footpod/Heart Rate Monitor/Alert Yes
Suunto Ambit3 Run Review 2014 7.9 2.5 30 29 (round) (661mm2) 128 x 128 (16.4K total) Good (50m) Yes Internal/Footpod Yes
Suunto Ambit2 R Review 2013 7.6 2.5 30 29 (round) (661mm2) 128 diameter (12.9K total) Good (50m) Yes Internal/Footpod Yes
Garmin 235 Review 2015 4.9 1.5 19 31 (round) (755mm2) 215 diameter (36.3K total) Good (50m) Yes (+OHRM) Internal/Footpod Yes
Garmin 620 Review 2013 7.1 1.5 20 25.4 (round) (507mm2) 180 diameter (25.4K total) Good (50m) Yes Internal/Footpod/Heart Rate Monitor/Alert Yes
Garmin 910XT Review 2011 7.5 2.5 49 33 x 20 (660mm2) 160 x 100 (16K total) Good (50m) Yes Footpod/Alert Yes
Garmin 310XT Review 2009 7.5 2.5 63 33 x 20 (660mm2) 160 x 100 (16K total) Good (50m) Yes Footpod Yes
Garmin 225 Review 2015 6.2 1.5 24 25.4 (round) (507mm2) 180 diameter (25.4K total) Good (50m) Yes (+OHRM) Internal/Footpod Yes
TomTom Cardio Runner Review 2015 6.0 2.2 30 22 x 25 (550mm2) 144 x 168 (24.2K total) Good (50m) Yes (+OHRM) Internal/Footpod Yes
Polar V800 Review 2014 8.0 2.8 31 23 x 23 (529mm2) 128 x 128 (16.4K total) Good (30m) Yes Internal/Footpod Yes
Polar M430 Review 2017 7.2 2.0 24 23 x 23 (529mm2) 128 x 128 (16.4K total) Good (50m) Yes (+OHRM) Internal/Footpod Yes
Polar M400 Review 2014 6.6 2.0 24 23 x 23 (529mm2) 128 x 128 (16.4K total) Good (30m) Yes Internal/Footpod Yes
Garmin 610 Review 2011 7.3 2.5 41 25.4 (round) (507mm2) 128 diameter (12.9K total) Fair (IPX7) Yes Footpod/Alert Yes
Leikr Review 2013 7.3 2.4 25 41 x 31 (1271mm2) 206 x 148 (76.8K total) Fair (IPX6) Yes Footpod Limited
Epson SF-510 Review 2015 4.4 1.7 24 28 x 22 (616mm2) 128 x 96 (12.3K total) Good (50m) Yes Limited Internal Limited
Epson SF-810 Review 2015 5.5 1.8 28 28 (round) (616mm2) 128 diameter (12.9K total) Good (50m) OHRM Only) Limited Internal Limited
Garmin 10 Review 2012 3.8 1.3 33 25 x 24 (600mm2) 55 x 32 (1.8K total) Good (50m) No No Yes



Review

Battery
Life (hr)
Tested Battery
Life (hr)
Extended
Battery
Life (hr)
Charge On The Run? Training
Effect
HRV GPS cache Sensors
Garmin Epix Review 24 17.6 50 Yes (with USB=Garmin) Yes Record Yes Ant+
Garmin Fenix 5X Review 20 23 35 Yes, but can't be worn Yes Record Yes Bluetooth/Ant+
Garmin Fenix 3 Review 20 22 50 Yes (with USB=Garmin) Yes No Yes Ant+
Garmin 935 Review 24 24.5 60 Yes, but can't be worn Yes Record Yes Bluetooth/Ant+
Garmin Vivoactive HR Review 13 13 Yes (with USB=Garmin) No No Yes Ant+
Garmin 920XT Review 24 19 40 No (terminates) Yes Record Yes Ant+
Garmin Vivoactive 3 Review 13 13 No Yes Bluetooth/Ant+
Garmin Vivoactive Review 10 10 10 Yes (with USB=Garmin) No No Yes Ant+
Suunto Spartan Trainer Review 10 11 30 Yes Yes No Yes Bluetooth
Suunto Ambit2 Review 15 50 Yes Yes Record Yes Ant+
Suunto Ambit3 Peak Review 20 100 Yes Yes Record Yes Bluetooth
Suunto Spartan Ultra Review 18 17 26 Yes, but can't be worn Yes Record Yes Bluetooth
Garmin Fenix 2 Review 15 50 Yes (with USB=Garmin) Yes No Yes Ant+
Suunto Ambit3 Run Review 10 10.5 100 Yes Yes Record Yes Bluetooth
Suunto Ambit2 R Review 8 7.3 25 Yes Yes Record Yes Ant+
Garmin 235 Review 11 11 Yes, but no optical HR Yes No Yes Ant+
Garmin 620 Review 10 10 No (resets) Yes Record Yes Ant+
Garmin 910XT Review 20 20 Yes, but no display Yes Record No Ant+
Garmin 310XT Review 20 20 Yes, but no display No No No Ant+
Garmin 225 Review 10 11 10 No (resets) No No Yes Ant+
TomTom Cardio Runner Review 8 6.3 8 No (resets) No No Yes Bluetooth HR
Polar V800 Review 13 24 50 No (terminates) Yes Display Predictive Bluetooth
Polar M430 Review 8 8 8 No No No Yes Bluetooth
Polar M400 Review 8 8 Yes, but can't be worn No No No Bluetooth
Garmin 610 Review 8 8 Yes, but no display Yes Record No Ant+
Leikr Review 5 6.5 5 Yes, but can't be worn No No Yes (few hours) Ant+
Epson SF-510 Review 30 30 30 No No No Yes (few hours) Bluetooth HR
Epson SF-810 Review 20 26 20 No No No Yes (few hours) None
Garmin 10 Review 5 5 No No No No None

5 Navigation Features

Review

Color Maps Breadcrumbs Courses To Waypoint Compass Reverse course Beeline to start Connect IQ Altimeter
Garmin Epix Review Yes Yes Yes Yes Yes Yes No Yes Yes
Garmin Fenix 5X Review Yes Yes Yes Yes Yes Yes No No Yes
Garmin Fenix 3 Review No Yes Yes Yes Yes Yes No Yes Yes
Garmin 935 Review No Yes Yes Yes Yes Yes No No Yes
Garmin Vivoactive HR Review No No No No No No No Yes Yes
Garmin 920XT Review No Yes Yes Yes Yes Yes No Yes Yes
Garmin Vivoactive 3 Review No No No No No No No No No
Garmin Vivoactive Review No No No No No No Yes Yes No
Suunto Spartan Trainer Review No No No No No No Yes No No
Suunto Ambit2 Review No No Yes Yes Yes Yes Yes No Yes
Suunto Ambit3 Peak Review No No Yes Yes Yes Yes Yes No Yes
Suunto Spartan Ultra Review No Yes Yes Yes Yes No Yes Yes Yes
Garmin Fenix 2 Review No Yes Yes Yes Yes Yes No No Yes
Suunto Ambit3 Run Review No No Yes Yes Yes Yes Yes No No
Suunto Ambit2 R Review No No Yes Yes Yes Yes Yes No No
Garmin 235 Review No No No No No No Yes Yes No
Garmin 620 Review No No No No No No No No No
Garmin 910XT Review No Yes Yes Yes No Yes Yes No Yes
Garmin 310XT Review No Yes Yes Yes No Yes No No No
Garmin 225 Review No No No No No No No No No
TomTom Cardio Runner Review No No No No No No No No No
Polar V800 Review No No Yes No No No Yes No Yes
Polar M430 Review No No No No No No Yes No No
Polar M400 Review No No No No No No Yes No No
Garmin 610 Review No No Yes Yes No No Yes No No
Leikr Review Yes Yes Yes No No No No No No
Epson SF-510 Review No No No No No No No No No
Epson SF-810 Review No No No No No No No No No
Garmin 10 Review No No No No No No No No No

For "navigation":

  • Color Maps gives you full color maps, rather like a smart phone, with roads and paths marked out.
  • Track Outline is a display of where you've run, rather like a breadcrumb trail. If there are maps, the outline is superimposed otherwise this is just the outline on its own without any context.
  • Course Outline is an outline of a route that can be downloaded. I've found this useful during ultras or in unfamiliar cities where I've needed to know where to go.
  • Back To Start is a simple arrow point to your starting point, so it won't help you backtrack.
  • Back To Waypoint returns you to a previously marked location using a simple arrow to point.
  • Compass. A magnetic compass can help you orient yourself or the map. Without a magnetic compass you have to be moving for the GPS to give you a sense of direction.


(Older Reviews: Polar RC3 GPS, Soleus 1.0, Motorola Motoactv.)