Donation Amount

Select the amount you would like to donate to Bobby christoffel's 75 mi challenge.

$50

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$1,000

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Donation Calculator

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