Donation Amount

Select the amount you would like to donate to Lorraine Koh's 50 mi challenge.

$50

$100

$250

$500

$1,000

Other

Donation Calculator

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