Lake Chabot Trail Run

NOV
7
2026
Experience a scenic trail run around the Lake Chabot reservoir and surrounding hills in Castro Valley. With distances from 8K to 50K plus a free kids dash, this event offers varied terrain for all marathon and trail enthusiasts.
Sat 7 Nov 2026
50 kilometers Marathon 30 kilometers Half Marathon 8 kilometers

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Lake Chabot Trail Run

The Lake Chabot Trail Run takes place at the Lake Chabot Regional Park - Marina in Castro Valley, California. The courses begin at the Marina and travel around the Lake Chabot reservoir and the surrounding hills. Participants can choose from several distances:

  • 8K
  • Half Marathon
  • 30K
  • Marathon
  • 50K
  • Kid's Run (50-yard dash for ages 6 and younger)

The terrain varies by distance, consisting of a mix of single-track trails, dirt roads, and asphalt sections. The 8K course is primarily asphalt (72%), while the longer distances like the Half Marathon and Marathon rely more heavily on dirt roads (60%). Aid stations are positioned every 4 to 5 miles, offering water, electrolytes, fruit, and snacks. This event follows a cupless policy, meaning runners are expected to carry their own hydration containers.

The routes are marked with color-coded ribbons every 200 yards, with polka-dot flagging used to indicate turns at intersections. A total time limit of 8.5 hours applies to all events. Runners in the 30K, Marathon, and 50K distances have access to a drop bag area at the start and finish line. All finishers receive a custom medal, and 50K finishers receive an additional custom coaster. Visit the organization's website for the most recent information.

50 km
50k
Marathon
Marathon
30 km
30k
Half Marathon
Half Marathon
8 km
Kid's Run (6yo & Younger, 50yd Dash)