Running my first marathon in a few weeks. Small race and was planning on doing it with my FR645 Music with music and gps on. My target time is low 3 hour range. I know sources I've read says it'll last 5 hours but I was looking for anyone with experience who have run 26.2 with music and gps on. Did your watch last the whole way with the music playing?
I went on a 20 miler the other day and the watch went from 98% down to 36% in a little less than 2.5 hours, so I have to believe it'll be fine based on that alone, but I just want to be safe. Thanks for any help you can give me!