On October 2nd I will be attempting an FKT (Fastest Known Time) on the Grand Canyon trail. I will be running the R2R2R trail, but 4 times in a row so roughly 168 miles in total. That being said I am shooting for a 48 hour time frame. My MARQ Athlete won’t last that long so how or what is the best way to charge while in an activity for a prolonged time and maintain GPS?
Thanks!