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Our third anniversary challenge will run from March 20, 2021 until April 8, 2021, but you can join anytime and we’ll sync your past activities as far back as your device will allow.

“25 in 25” with a bonus 2500 (feet) in 25 days!

In honor of our 25th anniversary, we’re offering our third challenge and inviting all fans of trail running to participate. Trail runners around the globe can register and participate in this fun, virtual run challenge complete with leaderboards and weekly trail teasers. Be sure to use the hashtag #ATRAChallenge25 on your social media posts and join our 25th Anniversary Challenge Facebook Group.

To become a member of the American Trail Running Association please visit the membership page of our website. Membership is not necessary to participate in this challenge.

Want to learn more about trail running? Check out the Trail News section of our website. If you’re ready to race, choose from over 3500 events on our Race Calendar.