Donation Amount

Select the amount you would like to donate to Karel Stroethoff's 600 mi challenge.

$50

$100

$250

$500

$1,000

Other

Donation Calculator

Calculate your donation based on an amount per-mile Karel Stroethoff has committed to ride this September. Your total donation will be the amount you select multiplied by Karel Stroethoff's 600 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