Donation Amount

Select the amount you would like to donate to Mark Tipton's 75 mi challenge.

$35

$70

$120

$265

$500

OtherSurprise Mark

Donation Calculator

Calculate your donation based on an amount per-mile Mark Tipton has committed to ride this September. Your total donation will be the amount you select multiplied by Mark Tipton's 75 mi challenge goal and will be charged up-front.

$0.30 cents/mi

$0.50 cents/mi

$0.80 cents/mi

$1/mi

$1.50/mi

$2/mi

Donation Total:

$