Why Do This?

Make this challenge your own. If you're just starting out with a running plan, do 1 mile, 5 days a week. If you already log 5 miles each time you head out the door challenge yourself to do intervals, speed training or hills for one of those runs.

• 101 Kicks in the Butt. Runner's World came up with more than 100 reasons to not lose your motivation to run.
• 7 of The Best Running Trails in America

RunKeeper
(Free; iTunes, Android)

Shoedometer
(Free; iTunes)

Zombies, Run!
($7.99; iTunes and Android)