Donation Amount

Select the amount you would like to donate to Michael Roberts's 75 mi challenge.

$35

$70

$120

$265

$500

OtherSurprise Michael

Donation Calculator

Calculate your donation based on an amount per-mile Michael Roberts has committed to ride this September. Your total donation will be the amount you select multiplied by Michael Roberts'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:

$