Want to do more for the Nike+ Human Race charities while adding a little friendly competition to your training? Join one of the charity challenges!

Pick from three challenges—Lance Armstrong Foundation, WWF or ninemillion.org—and then start running those miles! Whichever charity accumulates the most miles through 8.31.2008 gets the biggest portion of Nike’s $1.5 million Vote With Your Feet fund.

So, what are you waiting for? Select a challenge below and make your miles count. See you at the finish line!

Click a challenge to check it out and join!

Lance Armstrong Foundation Challenge

WWF Challenge

ninemillion.org Challenge