Race Day Weather
Comfortable temps, steady wind
Runners will face a temperature rising from 50°F to 68°F, with an average humidity of 68% and a dew point of 48°F. Winds will be from the W, peaking at 15 mph with gusts up to 28 mph. Runners should maintain a conservative pace early to adapt to warming conditions and stay hydrated throughout.
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?
What is the time limit for the Miwok 100K?
What will the weather be like for the 2026 Miwok 100K?
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° |