Lake Chabot Trail Marathon

Castro Valley, CA, USA • November 7, 2026
Register

Race Day Alerts

Get notified when the Lake Chabot Trail Marathon forecast shifts — so you can adjust your gear, pacing, and strategy.

Forecast shift alerts (temp, wind, rain)
Updates as weather changes leading up to race day
Max one message per day
Text AlertsRecommended

USA, UK, and Canada only. Standard rates apply.

or
Email Alerts

By subscribing you agree to receive race forecasts and racecast.io updates.

Race Day Weather

partly-cloudy-day
52°
66° high
Breezy
Dry

Comfortable temps, warming through the race

Mild 52°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 66°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.

partly-cloudy-night9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-night9
partly-cloudy-night9
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

Area Map

Course Map

Course Map Unavailable

We don't have course map data for Lake Chabot Trail Marathon yet. If you have a GPX file (or other format) for this race, we'd love to add it!

Request / Submit Map

FAQ

Ask a Question about the Lake Chabot Trail Marathon

Racecast Concierge (free during beta)

Ask a question about the Lake Chabot Trail Marathon and we'll do the hard part and find the answer for you within 48 hours.

By using Racecast Concierge, you agree to receive email alerts pertaining to the Lake Chabot Trail Marathon and general racecast.io updates.

When is the 2026 Lake Chabot Trail Marathon?

The 2026 Lake Chabot Trail Marathon will be held on Saturday November 7, 2026.

What is the time limit for the Lake Chabot Trail Marathon?

The time limit for the Lake Chabot Trail Marathon is 8.5 hours.

Historical Weather

Based on 3 years of data
Avg Temp
62°F
L:57° H:69°
RunScore
8
Conditions
Rain Freq
0%
0 of 3 yrs
Wind9mph
Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults

2025 Lake Chabot Trail Marathon

Clear conditions throughout the day.

2025
clear-day
59°/74°-
8

2024 Lake Chabot Trail Marathon

Clear conditions throughout the day.

2024
clear-day
52°/61°-
9

2023 Lake Chabot Trail Marathon

Partly cloudy throughout the day.

2023
partly-cloudy-day
61°/72°-
8
You Need an Account For That

Setting up a racecast.io account will allow you to start building a reputation in the community. Over time you'll be able to rate races, join the discussion, and post in the community.

Right now we are invite only, you can get on the waitlist by entering your email below:

OR
You Need an Account For That

Setting up a racecast.io account will allow you to start building a reputation in the community. Over time you'll be able to rate races, join the discussion, and post in the community.

Right now we are invite only, you can get on the waitlist by entering your email below:

OR