Lake Chabot Trail Run

Castro Valley, United States • 8 Nov 2025

Lake Chabot Trail Run : event details

The Lake Chabot Trail Run takes place on Saturday, November 8, 2025 at Lake Chabot Regional Park - Marina in Castro Valley, CA (17600 Lake Chabot Road, 94546). The event offers multiple distances:

  • 8K
  • Half Marathon
  • 30K
  • Marathon
  • 50K
  • Kid's Run (6 years & younger, 50 yd dash) - free

Race day check-in is at the Marina; participants are asked to arrive about 45 minutes before their event to collect bibs and shirts. Parking at the park is $5 per vehicle. Drop bags are allowed at the Start/Finish for the 30K, Marathon, and 50K. T-shirts are given to pre-registered runners and all finishers receive a custom medal; 50K finishers also receive a custom coaster. Results are timed with Bibtags by MyLaps and published regularly.

Course, support and rules

The course starts at the Marina and loops around the Lake Chabot reservoir and surrounding hills. Distances were measured with a Rolatape surveyor's wheel. The course is color coded and marked with ribbon about every 200 yards; polka-dot flagging indicates turns and blue ribbons mark the wrong way. GPX files are available for each distance.

Elevation gain and surface by distance:

  • 8K: 380' gain; Single Track 16%, Dirt Road 12%, Asphalt 72%
  • Half Marathon: 1,450' gain; Single Track 14%, Dirt Road 60%, Asphalt 26%
  • 30K: 1,830' gain; Single Track 14%, Dirt Road 48%, Asphalt 38%
  • Marathon: 2,900' gain; Single Track 14%, Dirt Road 60%, Asphalt 26%
  • 50K: 3,280' gain; Single Track 14%, Dirt Road 53%, Asphalt 33%

Aid stations are fully stocked every 4 to 5 miles with fruit, salty snacks, candy, water, and Skratch electrolyte drink. The event is cupless; runners should bring their own fluid container. Headphones are allowed only on dirt road sections. Dogs are not allowed on the course. Visit the organization's website for the most recent information.

Race information

50 km
3280 m+
50k
42 km
2900 m+
Marathon
30 km
1830 m+
30k
21 km
1450 m+
Half Marathon
8 km
116 m+
Kid's Run (6yo & Younger, 50yd Dash) - Free!
Visit the organization's website for the most recent information.
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