Challenges, Trackers and Training PlansRunning Challenges Tired of your usual running routine? Bust out of your running rut with these 30 ideas to shake up your running What do you want to accomplish in 2019?Mileage Trackers Never a skull moment! Track 120 miles, 120 kilometers, 120 minutes, or 120 of whatever you want to track. Just like a spider, slowly build your web by running miles one by one. How do you run 100 miles? Easy! One mile at a time. How do you run 50 miles? Easy! One mile at a time.