Mount Diablo Challenge 2025 - presented by Valley Spokesmen Bicycle Club

Danville, CA
Sunday, Oct 5, 2025
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If you are not ready to register but would like to donate to our charity please see below"
If you would like to donate to Save Mt Diablo, please click here.

Note: T-Shirt availability not guaranteed for registrations received after September 1, 2025
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Select Your Registration(s)

You can add multiple registrations at the same time. Simply select the number desired from each quantity box before pressing the Continue button.

Type Price Fee Quantity
Road, Mtn, Elliptical, Unicycle - Junior 17 & Under
registration at this price ends 09/29/2025 11:59 PM
$30.00 $3.55
Road, Mtn, Unicycle, Elliptical - Adults 18 & over
registration at this price ends 08/31/2025 11:59 PM
$75.00 $6.25
E-Assisted Bike - Adults 18 & over
registration at this price ends 08/31/2025 11:59 PM
$75.00 $6.25
Tandem - Includes both riders
registration at this price ends 08/31/2025 11:59 PM
$150.00 $10.75
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