BestRaces| Distances | 12K |
| Surface | road |
| Field size | 19,826 runners |
| Founded | 1912 (114 years) |
| Elevation gain | 350 ft |
| USATF certified | Yes |
| Boston qualifier | No |
Researched from the race's own site and published results, last updated October 5, 2026.
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Race-day weather
What the weather did on or around May 16 in each of the last 5 years, measured at San Francisco Dwtn, 0.5 miles from San Francisco.
| Year | High | Low | Rain |
|---|---|---|---|
| 2026 | 64°F | 52°F | none |
| 2025 | 67°F | 51°F | none |
| 2024 | 63°F | 53°F | none |
| 2023 | 67°F | 52°F | none |
| 2022 | 59°F | 51°F | none |
Daily highs and lows, not start-line temperatures: most races start in the cool of the morning, closer to the low. Source: NOAA National Centers for Environmental Information, GHCN-Daily.
Stay near San Francisco
Hotels and rentals in and around San Francisco, CA.
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Race Pace Analyzer beta
Build your Bay to Breakers splits
This one already knows the course. Give it your goal time and it gives you every split to the finish, adjusted for this race's terrain and its usual race-morning temperature, plus a fueling plan and a check on whether the goal fits your fitness. It's free, and there's nothing to sign up for.
- Already loaded
- 12K
- 350 ft of climbing · Rolling
- ≈56°F on May race mornings
| Mile | Split | Elapsed |
|---|
Training paces for this goal
The everyday paces that build the fitness behind your goal, worked out from your target with the Daniels VDOT model. Save these for your next training block.
Treat these as a guide. Run easy days by feel, and adjust for heat, hills and how your legs feel that day.
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