Lake Chabot Trail Challenge
Castro Valley, California, United States
Jun 7, 2026 - Sunday
5k, Half-marathon
Race Information
The Lake Chabot Trail Challenge Half Marathon and 5K is well regarded among serious trail runners in the outlying areas.
The half marathon course is a scenic, hilly loop, mainly on dirt fire roads. The ridge-line views look down upon scenic Lake Chabot, surrounding grassy slopes, and eucalyptus groves. Mt. Diablo and San Francisco Bay are visible along the route. There are water stations with first aid and radio support; it's recommended that you also bring your own hydration. The half marathon has a time limit of 3.5 hours. The 5k (3.1 miles) course is an out and back that has gentle rolling hills and consists mostly of paved surfaces. This route includes one water station with first aid and radio support.
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Race Facts
Race Size: 100 - 500
Elevation: Lots of Hills
Course Type: Trail
Boston Qualifier: No
Kids Run: No
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