
Stinson Beach, United States of America · Monday 10 May 2027
Escape the city and lose yourself among the giants. The Muir Woods Half Marathon offers a rare opportunity to run beneath the towering redwood trees of California's famed national monument. This trail race provides a serene and awe-inspiring experience, a chance to connect with nature's grandeur. Runners seeking a peaceful and unforgettable challenge will find solace and inspiration among these ancient trees.
Adjusted Time
3:19:07
Time difference: +94.1 minutes compared to a flat, road, temperate course.
On our difficulty model, Muir Woods Half Marathon plays about 82 minutes slower than an average road half marathon for a 1:30 runner. It ranks #2 hardest of 450 half marathons we analyse, and #1 of 145 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
Estimated finish times on this course versus the same effort on an average road half marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Muir Woods Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 2:49:47 | +1:19:47 |
| 1:45:00 | 3:19:07 | +1:34:07 |
| 2:00:00 | 3:49:13 | +1:49:13 |
| 2:15:00 | 4:20:06 | +2:05:06 |
| 2:30:00 | 4:51:43 | +2:21:43 |
| 2:45:00 | 5:24:03 | +2:39:03 |
| 3:00:00 | 5:57:05 | +2:57:05 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Muir Woods Half Marathon is a half marathon held in Stinson Beach, United States of America. It is scheduled for Monday 10 May 2027. The course is run on trail surface with 1455m of total climbing, with its high point near 460m above sea level. For registration and full race details, visit the official Muir Woods Half Marathon website.
This is a very challenging course with 1455m of total climbing - well above the average trail marathon - topping out around 460m above sea level. Hill training is essential, and you should expect a slower finish time than on a flat course.
Based on historical weather data for May, the expected race day conditions are as follows. Moderate temperatures between 11°C and 23°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a low chance of rain (0%), so dry conditions are likely.
Muir Woods Half Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are usually slower than the road equivalent - often by 10-20% - because of uneven footing, technical sections, and frequently steeper gradients, though a smooth, non-technical or downhill trail can run faster than that suggests. Trail-specific shoes with good grip are recommended.
Looking for an easier marathon or a tougher challenge? You can also compare Muir Woods Half Marathon against other half marathons to find the right race for your goals.
Cleveland, United States of America
St. Paul, United States of America
Lansing, United States of America
Louisville, United States of America
Cary, United States of America