Anyone try to use one of the longer battery models from Garmin for an entire 100 miler like the 910xt or 310xt?  I have a 910xt and various battery reports have it working around 22-24 hours with GPS.  I was thinking of using GPS for half of the event and footpod for the other half but with the 100 being on trails, I'm expecting the footpod to wildly inaccurate.

 

Thx.

Try this thread.  mta:  PerfesserR's entry.