Donation Amount

Select the amount you would like to donate to Silas Holck's 300 mi challenge.

$35

$70

$120

$265

$2,500

OtherSurprise Silas

Donation Calculator

Calculate your donation based on an amount per-mile Silas Holck has committed to ride this September. Your total donation will be the amount you select multiplied by Silas Holck's 300 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:

$