I participated in the 2017 Baystate marathon in Lowell,MA yesterday….touted as a good one for first timers as it is mainly flat. And it was mostly flat except in mile 4 and 14, and the bridges. The temps were perfect to start, wearing my cooling sleeves and light gloves. I started up my marathon playlist and Gettin Jiggy with it came on! I started up my Garmin so the gps would be ready and got a low battery warning for my HR monitor. Oh well, nothing I can do about that now!