Miwok 100K
Race Day Weather
Cool morning, rising temps ahead
Runners will face a start-line temperature of 49°F, gradually warming to 64°F by race end. With a light wind from SW at 9 mph, conditions remain favorable and dry. Runners should consider adjusting their pace as temperatures rise and stay hydrated, especially with a humidity level of 62%.
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Race Info
The Miwok 100K Trail Race is a 62.2 miles (100.1 km) long ultramarathon that takes place annually in southern Marin County, California, typically on the first Saturday of May.
The race starts and ends in the town of Stinson Beach. Almost all of the course is on fire roads and single-track trails, first to the south of Stinson Beach and then to the north. Runners climb a total of approximately 11,800 feet (3,600 m). Wikipedia
FAQ
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Historical Weather
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2025 |  | 52°/64° | - | 48° | |
2024 |  | 49°/56° | Light | 48° | |
2023 | | 53°/62° | Light | 49° |