Miwok 100K
Race Day Weather
Cool morning, steady conditions
Runners will face a cool start at 49°F, rising to 64°F by race end. With a light breeze from the W, maxing at 10 mph, humidity will be at 76%. Runners should consider a conservative pace early to account for the warming trend, staying hydrated throughout.
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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° |