TODAY is Kick Cancer's Butt Day and ALL online donations will be MATCHED (up to $1.5M)! Donate Now

Great Cycle Challenge USA

Riding to fight kids' cancer

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Support W.O.L.F.'s challenge
W.O.L.F.

Today is Kick Cancer's Butt Day and ALL donations will be MATCHED (up to $1.5M). Hurry, it's for today ONLY!

Donation Amount

Select the amount you would like to donate to W.O.L.F.'s 300 mi challenge.

Donation Calculator

Calculate your donation based on an amount per-mile W.O.L.F. has committed to ride this September. Your total donation will be the amount you select multiplied by W.O.L.F.'s 300 mi challenge goal and will be charged up-front.

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