Donation Amount

Select the amount you would like to donate to John Humphries's 50 mi challenge.

$35

$70

$120

$265

$500

OtherSurprise John

Donation Calculator

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

$