United States -> San Francisco -> City guide
San Francisco, officially the City and County of San Francisco, is the fourth-most populous city in California and the 17th-most populous in the United States, with a population of 827,526 in 2024. Among U.S. cities with over 300,000 residents, San Francisco is ranked second by population density, first by per capita income, and sixth by aggregate income as of 2023. Some 4.6 million residents live in the city's metropolitan statistical area, the 13th-largest in the United States. Around 9.2 million live in the broader San Jose–San Francisco–Oakland combined statistical area, the fifth-largest in the United States.
Explore routes, compare distance and elevation, and plan sessions for current weather conditions.
| Season | Typical weather | Running guidance |
|---|---|---|
| All seasons | Varies by city | Adjust pace, hydration, and timing based on current weather. |
Surface mix: Urban roads, park paths, and mixed city surfaces.
Safety tip: Check traffic flow, sidewalks, and route lighting before your run.
Marathons and races
Popular runner events