Donation Amount

Select the amount you would like to donate to Duncan MacKay's 200 mi challenge.

$35

$70

$120

$265

$500

OtherSurprise Duncan

Donation Calculator

Calculate your donation based on an amount per-mile Duncan MacKay has committed to ride this September. Your total donation will be the amount you select multiplied by Duncan MacKay's 200 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:

$