Donation Amount

Select the amount you would like to donate to Justin Grossman's 50 mi challenge.

$50

$100

$250

$500

$1,000

Other

Donation Calculator

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