Ive had Runkeeper for a few years now, and Im impressed with how the design and UI have evolved over time. Also, the Time tracking seems to be much more accurate than its competitors. I just wish that the Runkeeper community was larger because none of my friends that run use it Rhee than me.
The Apple Watch app is also super useful to start and pause runs without removing your arm band.
EvanMoody about ASICS Runkeeper—Run Tracker