Lake Chabot Trail 50K

Castro Valley, CA, USA · November 7, 2026·
partly-cloudy-day55°·71° high·Light·Dry
7
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Lake Chabot Trail 50K race day weather

partly-cloudy-day
55°at start
71° high
Light
Dry
Your goal
0:00:00

Comfortable temps, big temp swing

Mild 55°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 71°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.

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clear-day10
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Pace Calculator

31.1mi
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About the Lake Chabot Trail 50K

The 50K runs the marathon course, two laps of the Pink Loop around Lake Chabot, then adds the Yellow Loop 8K to reach 50 kilometers. It starts and finishes at the Marina in Lake Chabot Regional Park in Castro Valley. Most of the route is dirt road, with about a third on asphalt and a short share of single track. It climbs roughly 3,280 feet over the distance.

Race weekend

Saturday, November 7
8:30 AM50K (31.1 mi)
8:30 AMMarathon (26.2 mi)8:30 AM30K (18.6 mi)8:30 AMHalf Marathon (13.1 mi)
8:45 AM8K (5.0 mi)
9:00 AM5K (3.1 mi)
Area Map
Course Map

Lake Chabot Trail 50K FAQ

When is the 2026 Lake Chabot Trail 50K?

The 2026 Lake Chabot Trail 50K will be held on Saturday November 7, 2026.

What is the time limit for the Lake Chabot Trail 50K?

The time limit for the Lake Chabot Trail 50K is 8.5 hours.

What will the weather be like for the 2026 Lake Chabot Trail 50K?

The forecast calls for a high of 71°F and a low of 52°F with a 0% chance of rain. Check our detailed hourly forecast above for the best 50K race plan.

What is the weather usually like for the Lake Chabot Trail 50K?

Over the 3 years racecast.io has race-day weather for (2023 to 2025), it averaged 53°F at the start and 66°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Lake Chabot Trail 50K?

Of the 3 years on record, 2025 was the warmest, reaching 70°F during race hours. The coldest start was 2024, at 46°F.

What was the windiest Lake Chabot Trail 50K?

Of the 3 years on record, 2025 was the windiest, with wind averaging 6 mph during race hours. The calmest was 2023, at 4 mph.

Lake Chabot Trail 50K weather history

Based on 3 years of data
Avg Temp
61°F
L:53° H:66°
RunScore
7
Conditions
Rain Freq
0%
0 of 3 yrs
Wind5mph
Dew49°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
56°/70°-
6
2024
clear-day
46°/60°-
10
2023
partly-cloudy-day
58°/69°-
5