Run/Walk at any location you want. You can use the treadmill, run outside, your own course, another race, or training run/walks. You do not have to run/walk the distance all at the same time. Take as long as you need. For more events go to USRoadRunning.com
There are 4 checkpoints to each challenge. As you progress you will get to see a new image that you have unlocked at 25%, 50%, 75%, and 100%.
There are now 6 hidden images in the Challenge Header. See if you can find all the hidden items in the Challenge header. They are a Stopwatch, Female Runner, Male Runner, Water Bottle, US Road Running Finish Arch and Running Shoes.
After you register, go to the training log
and start the challenge. You can log your mileage in the training log. Log your miles each day until you complete the challenge. All challenges have four check points. Make sure you check out your new images at each checkpoint.