Select the amount you would like to donate to Sǐñ Cǐťý's 50 mi challenge.
Calculate your donation based on an amount per-mile Sǐñ Cǐťý has committed to ride this September. Your total donation will be the amount you select multiplied by Sǐñ Cǐťý's 50 mi challenge goal and will be charged up-front.
A receipt will be sent to this email address
