Select the amount you would like to donate to Grayson Madsen's 50 mi challenge.
Calculate your donation based on an amount per-mile Grayson Madsen has committed to ride this September. Your total donation will be the amount you select multiplied by Grayson Madsen's 50 mi challenge goal and will be charged up-front.
A receipt will be sent to this email address
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Sign Up Now to Win a Trek Bike – Ends Soon!
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