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From Fellrnr.com, Running tips
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* '''How far did I run?''' This is the most basic question, and sadly, the Epix has rather poor [[GPS Accuracy]], and while firmware updates might improve this slightly, I doubt it will get close to the accuracy of the [[Polar V800]]. It looks like activating GLONAS and WAAS improves accuracy, it's still not great. How big a problem this is for you will depend on the type of course you're running, but if this is important to you, look for a more accurate watch.
* '''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 Epix 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 Epix has is as good as it gets for navigation. It includes:** '''Color Maps'''. You'll see full color maps, rather like a smart phone, with roads and paths marked out. ** '''Track Outline'''. There is a display of where you've run, rather like a breadcrumb trail. This outline is superimposed over the ability color maps, and you can use it to backtrack along your path. ** '''Course Outline'''. This 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 download go. ** '''Back To Start'''. This is a coursesimple arrow point to your starting point, so it won't help you backtrack. ** '''Back To Waypoint'''. You can mark a location and use the arrow to give directions back point to the startit later. This Again, this is a simple "as good as it getsthe crow flies" pointer. ** '''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.
* '''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. Not only does the Epix get [[Cadence]] from a [[Footpod]], it will also get it from the Garmin Run Heart Rate monitor. There is also support for Cadence from the internal accelerometer, though I find that's not as accurate. The Cadence alerts are especially useful for keeping you on track.
For ultramarathon running the battery life of the Epix makes it a strong candidate, especially with the mapping functionality. If you hope to be still moving during the [[Second Dawn]], the Epix might be for you. See [[Best Running Watch#Watches for Ultrarunning| Watches for Ultrarunning]] for more details.
