Select the amount you would like to donate to Grayson Houston's 100 km challenge.
Calculate your donation based on an amount per-kilometre Grayson Houston has committed to ride this August. Your total donation will be the amount you select multiplied by Grayson Houston's 100km challenge goal and will be charged up-front.
A receipt will be sent to this email address
Canada Revenue Agency requires all receipts to display a postal address
