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* '''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. ** '''Track Outline'''. There is a display of where you've run, rather like a breadcrumb trail. There are no maps, but so this is just the outline on its own without any context. However, youcan use it to backtrack along your path. ** '''Course Outline'''ll have . This is an outline of the a route youthat can be downloaded. I've found this useful during ultras or in unfamiliar cities where I've run and needed to know where to go. ** '''Back To Start'''. This is a simple arrow point to your starting point, so it won't help you backtrack. ** '''Back To Waypoint'''. You can download mark a courselocation and use the arrow to point to it later. Again, which Ithis is a simple "as the crow flies" pointer. ** '''GPS "Compass"'''. There've found useful on occasions no magnetic compass so you have to be moving for the GPS to give you a sense of direction.
* '''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 [[Best Running Watch#Watches for Ultrarunning| Watches for Ultrarunning]] for more details.