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