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 race offers multiple distance options:
- 8K
- Half Marathon
- 30K
- Marathon
- 50K
- Kid's Run (50 yd dash, 6 years & younger) - Free
Distances are measured using a Rolatape surveyor's measuring wheel.
Course, services and rules
The course starts at the Marina and travels around the Lake Chabot reservoir and surrounding hills. Loops are color coded: 8K is the Yellow Loop, Half Marathon is the Pink Loop, 30K is Pink + Yellow, Marathon is Pink twice, and 50K is Marathon + 8K. The route is flagged approximately every 200 yards; polka-dot flagging marks turns and blue ribbons mark wrong ways. If a runner does not see their flagging for 3-4 minutes, they should retrace to find the course.
Elevation gains: 8K 380', Half 1,450', 30K 1,830', Marathon 2,900', 50K 3,280'. Surfaces vary by distance and include single track, dirt road, and asphalt (percentages provided by the organizer). Fully stocked aid stations appear every 4-5 miles with fruit, salty snacks, candy, water, and Skratch drink; runners are advised to carry at least 20 oz of water between stations. The event is cupless; participants should bring a personal fluid container. Parking is $5 per vehicle. Drop bags are allowed for 30K, Marathon, and 50K. Pre-registered runners receive shirts; all finishers receive medals, and 50K finishers receive a custom coaster. Results are timed with bibtags and published regularly. Headphone and pet rules apply on trail sections. Visit the organization's website for the most recent information.