Lake Chabot Trail Marathon
Castro Valley, CA, USA • November 7, 2026
Race Day Weather
52°
66° high
Breezy
Dry
Cool morning, steady conditions
Runners will face temperatures starting at 58°F and peaking at 66°F. Winds will be light at 9 mph from the WSW, with occasional gusts up to 32 mph. With humidity at 58%, it’s advisable to maintain a steady pace throughout and stay hydrated, especially as temperatures rise.
Race day forecast available in 224 days
Pre-raceRace windowPost-race
The course starts at the Marina and travels around the popular Lake Chabot reservoir and surrounding hills. Great course for first-time trail runners! Source