
Santa Rosa, United States of America · Tuesday 24 August 2027
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
1:53:10
Time difference: +8.2 minutes compared to a flat, road, temperate course.
On our difficulty model, Santa Rosa Half Marathon plays about 8 minutes slower than an average road half marathon for a 1:30 runner. It ranks #105 hardest of 450 half marathons we analyse, and #31 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 | 1:36:05 | +06:05 |
| 1:45:00 | 1:53:10 | +08:10 |
| 2:00:00 | 2:10:25 | +10:25 |
| 2:15:00 | 2:27:47 | +12:47 |
| 2:30:00 | 2:45:18 | +15:18 |
| 2:45:00 | 3:02:57 | +17:57 |
| 3:00:00 | 3:20:42 | +20:42 |
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 Tuesday 24 August 2027. 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. Hot conditions are expected, with temperatures between 26°C and 31°C. Heat is one of the biggest performance factors in distance running - for every degree above 15°C, finish times can slow by roughly 1-2%. Extra hydration and a conservative start are strongly recommended. There is a high chance of rain (93%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
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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