Select the amount you would like to donate to Ahmir Brock Ahmir Brock's 39 mi challenge.
Calculate your donation based on an amount per-mile Ahmir Brock Ahmir Brock has committed to ride this September. Your total donation will be the amount you select multiplied by Ahmir Brock Ahmir Brock's 39 mi challenge goal and will be charged up-front.
A receipt will be sent to this email address
