Weather
Forecast| Time | Temp | Dew Pt | Humidity | Wind | Conditions |
|---|---|---|---|---|---|
| Start | 57°F | 53° Nice | 86% | 6 mph SW | Partly cloudy |
| 8:00 AM | 58°F | 53° Nice | 83% | 6 mph SW | Partly cloudy |
| 9:00 AM | 62°F | 54° Nice | 74% | 6 mph SW | Partly cloudy |
| 10:00 AM | 62°F | 53° Nice | 72% | 8 mph W | Partly cloudy |
| 11:00 AM | 64°F | 53° Nice | 67% | 10 mph W | Partly cloudy |
| Finish | 65°F | 53° Nice | 64% | 11 mph W | Clear sky |
Elevation Profile
Course Stats
Mile Splits
| Mile | Grade |
|---|---|
| 1 | -0.1% |
| 2 | +0.0% |
| 3 | +0.0% |
| 4 | +0.1% |
| 5 | +0.0% |
| 6 | +0.8% |
| 7 | +2.5% |
| 8 | -0.2% |
| 9 | +0.6% |
| 10 | -1.5% |
| 11 | -1.1% |
| 12 | +2.0% |
| 13 | +0.1% |
| 14 | +0.9% |
| 15 | -2.2% |
| 16 | +1.0% |
| 17 | +1.8% |
| 18 | +0.1% |
| 19 | -0.5% |
| 20 | +0.3% |
| 21 | -1.9% |
| 22 | -2.5% |
| 23 | -0.2% |
| 24 | +0.3% |
| 25 | -0.4% |
| 26 | +0.0% |
| 27 | +0.0% |
RM Difficulty Index
Race-Day Weather History
Race-morning conditions on this date over the past 5 years: median 58°F with a 54°F dew point and 13 mph wind. Heat has rarely been a factor.
| Year | Temp | Dew Pt | Wind | Rain | Sky |
|---|---|---|---|---|---|
| 2022 | 60°F | 54°F | 11 mph | — | Partly cloudy |
| 2021 | 58°F | 54°F | 14 mph | — | Partly cloudy |
| 2020 | 59°F | 54°F | 11 mph | — | Partly cloudy |
| 2019 | 58°F | 54°F | 13 mph | — | Partly cloudy |
| 2018 | 58°F | 55°F | 14 mph | — | Partly cloudy |
Morning conditions (race window) on the San Francisco Marathon calendar date each year, from the ERA5 reanalysis archive — the race’s usual slot, not necessarily each edition’s exact day.
San Francisco Bay Area Marathon Pace Calculator & Race Plan
The San Francisco Marathon is the premier bay area marathon, running through some of the most iconic scenery in American road racing. The course crosses the Golden Gate Bridge, winds through the Presidio and Haight-Ashbury, and follows the Embarcadero along the waterfront. With 319 meters of elevation gain, this is a genuinely hilly marathon that includes steep neighborhood climbs and the sustained ascent to the bridge deck.
The marathon in SF's Bay Area presents a unique weather challenge. July mornings typically start in thick fog with temperatures in the low 50s, but by late morning the sun can break through and push temps into the 60s or higher. Our pace model adjusts for the front-loaded hills and shifting conditions so you can stay conservative through the climbs and run the flatter back half with confidence.
San Francisco Marathon FAQ
When is the next San Francisco Marathon?›
The next San Francisco Marathon is on Sunday, July 26, 2026.
How long is the San Francisco Marathon?›
The San Francisco Marathon is 26.2 miles (42.195 km), the standard marathon distance. It runs in San Francisco, CA.
How much elevation gain does the San Francisco Marathon have?›
The San Francisco Marathon has about 1,045 ft (319 m) of climbing and 1,044 ft of descent, with a maximum grade of 2.55%.
Is the San Francisco Marathon flat, downhill, or hilly?›
The San Francisco Marathon starts and finishes at roughly the same elevation (net +0 m). With 1,045 ft of total climbing along the way, the profile rolls even though the net change is small.
How hard is the San Francisco Marathon?›
Runner's Math scores the San Francisco Marathon 48/100 (Challenging) — #5 of 38 marathon courses in our library, ranked by modeled time cost. The profile costs about 2:09 versus a flat course for a runner at 4:00-marathon pace.
What's the weather usually like at the San Francisco Marathon?›
Over the past 5 years on this date, median race-morning conditions were 58°F with a 54°F dew point and 13 mph wind. Heat has rarely been a factor.