Miwok 100K
Race Day Weather
Mild start, warming trend
Runners will face a temperature rise from 50°F at the start to 68°F by the finish, with an average humidity of 68%. Wind will be a moderate 15 mph from the WSW, providing a headwind throughout. To optimize performance, runners should adjust their pace as temperatures increase and stay hydrated regularly.
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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
When is the 2026 Miwok 100K?
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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° |