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