Donation Amount

Select the amount you would like to donate to Derek Li's 75 mi challenge.

$35

$70

$120

$265

$500

OtherSurprise Derek

Donation Calculator

Calculate your donation based on an amount per-mile Derek Li has committed to ride this September. Your total donation will be the amount you select multiplied by Derek Li's 75 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:

$