Carrie Tollefson Shows You The Best Way To Use Your Phone And Apps For Grandma’s Marathon [VIDEO]

Every year technology gets better and introduces new ways to use your phone for training and running. Carrie Tollefson, one of the race broadcasters, shows you the best way to optimize your phone with some useful apps.

These apps can help you with training, will

Here is Carrie Tollefson talking to one of her tech guys about apps, because he is an app developer.