I’m gunning for four hours this October and I’m worried it won’t last. My S4 uses more than yours it seem even without music. Will run a 20K Tuesday again to test out without music.
Do you use the low power setting for workout without LTE and no heart rate?
Good luck! If you can get down to 1:30 for a half, then you should be in 3:15 territory for a marathon!
I would eventually like to run some marathons in Europe, but it’ll probably be in a few years after the kids finish high school. Right now, I’m working on the 50 US states, and that’s a lot of states.