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