For over 40+ years, Save Mount Diablo has worked tirelessly to preserve and increase the open space on and around Mount Diablo. In that time, their efforts have taken us from 6,788 acres of open space to over 100,000 acres of open space on and around the mountain!
With distances suitable for everyone from those hitting the trails for the first time to experienced ultra-runners, the Diablo Trails Challenge was created to help celebrate and support these achievements. A portion of all entry fees will go to Save Mount Diablo to help them continue preserving open space and trails for all of us to enjoy.
Registration fees
Prices are inclusive of mandatory charges, items, and fees
50K
Price changes in 2 months 5 days-
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Register for 50K$159.17Now registering Oct 12 – Jan 26
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$169.85Jan 27 – Mar 9
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$180.52Mar 10 – Apr 5
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HALF MARATHON
Price changes in 2 months 5 days-
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Register for HALF MARATHON$105.80Now registering Oct 12 – Jan 26
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$111.14Jan 27 – Mar 9
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$116.47Mar 10 – Apr 5
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10K
Price changes in 2 months 5 days-
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Register for 10K$86.58Now registering Oct 12 – Jan 26
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$91.92Jan 27 – Mar 9
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$97.26Mar 10 – Apr 5
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5K
Price changes in 2 months 5 days-
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Register for 5K$76.98Now registering Oct 12 – Jan 26
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$82.31Jan 27 – Mar 9
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$87.65Mar 10 – Apr 5
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REMOTE RUNNER
Price changes in 4 months 19 hours-
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Register for REMOTE RUNNER$50.29Now registering Oct 12 – Mar 21
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$55.63Mar 22 – Apr 5
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BBQ ticket
Registration closes in 4 months 15 days-
BBQ lunch plate from Slow Hand BBQ
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Register for BBQ ticket$23.72Now registering Oct 12 – Apr 5
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Event schedule
- Sat, April 5, 2025 6:30 AM - 50K RACE START
- Sat, April 5, 2025 8:30 AM - HALF MARATHON RACE START
- Sat, April 5, 2025 9:00 AM - 10K RACE START
- Sat, April 5, 2025 9:30 AM - 5K RACE START
Contact information
- Event contact
- Jasmin Fiandaca
- Website
- Visit website
