Donation Amount

Select the amount you would like to donate to Harper Brooks's 50 mi challenge.

$35

$70

$120

$265

$500

OtherSurprise Harper

Donation Calculator

Calculate your donation based on an amount per-mile Harper Brooks has committed to ride this September. Your total donation will be the amount you select multiplied by Harper Brooks's 50 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:

$