Lake Chabot Trail Run
Castro Valley, United States • 8 Nov 2025
Event overview
The Lake Chabot Trail Run takes place on Saturday, November 8, 2025, at Lake Chabot Regional Park - Marina in Castro Valley, CA. The event offers multiple trail distances that start and finish at the marina and follow routes around Lake Chabot reservoir and nearby hills. All events have an overall time limit of 8.5 hours. Parking at the park is $5 per vehicle. Pre-registered runners receive T-shirts and all finishers receive a custom medal; 50K finishers also receive a custom coaster.
Distances
- 8K
- Half Marathon
- 30K
- Marathon
- 50K
- Kid's Run (6 years & younger, 50 yd dash) - free
Course and logistics
The course is marked with ribbon about every 200 yards and uses color-coded loops for each distance. Polka-dot flagging indicates required turns and blue ribbons mark incorrect routes. Headphones are allowed only on dirt-road sections; they are not allowed on single-track, when crossing paved roads, at aid stations, or when crossing the finish line. No dogs are allowed on the course.
Elevation gain and surface mix by distance are provided: 8K (380'), Half Marathon (1,450'), 30K (1,830'), Marathon (2,900'), 50K (3,280'). Surfaces include single-track, dirt road, and asphalt in varying proportions. Fully stocked aid stations are placed every 4–5 miles with fruit, salty snacks, candy, water, and Skratch sports drink; runners are advised to carry at least 20 oz. of water between aid stations. The event is cupless; participants should bring their own fluid container. Drop bags are allowed for 30K, Marathon, and 50K at the start/finish. Visit the organization's website for the most recent information.