
Santa Rosa, United States of America · Monday 24 August 2026
Taking place in California’s wine country, the Santa Rosa Half Marathon is a flat, fast, and scenic race that offers an excellent opportunity for a personal best. The course runs through vineyards, country roads, and parts of downtown Santa Rosa, making it a varied and visually engaging race. A highlight of the event is the post-race celebration, featuring local wines, craft beer, and gourmet food, adding to the race’s festive and welcoming atmosphere.
Adjusted Time
1:45:21
Time difference: +0.3 minutes compared to a flat, road, temperate course.
On our difficulty model, Santa Rosa Half Marathon plays about 2 minutes slower than an average road half marathon for a 1:30 runner. It ranks #272 hardest of 450 half marathons we analyse, and #88 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 Santa Rosa Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:29:53 | −00:07 |
| 1:45:00 | 1:45:21 | +00:21 |
| 2:00:00 | 2:00:51 | +00:51 |
| 2:15:00 | 2:16:23 | +01:23 |
| 2:30:00 | 2:31:57 | +01:57 |
| 2:45:00 | 2:47:32 | +02:32 |
| 3:00:00 | 3:03:09 | +03:09 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Santa Rosa Half Marathon is a half marathon held in Santa Rosa, United States of America. It is scheduled for Monday 24 August 2026. The course is run on road surface with 53m of total climbing, with its high point near 54m above sea level. For registration and full race details, visit the official Santa Rosa Half Marathon website.
This is a very flat course, with only 53m of total climbing and little change in altitude throughout. Flat profiles let you hold an even pace from start to finish, which makes this a fast, PB-friendly race.
Based on historical weather data for August, the expected race day conditions are as follows. Moderate temperatures between 14°C and 26°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.
Santa Rosa Half Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Santa Rosa Half Marathon against other half marathons to find the right race for your goals.
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