| South San Francisco to Fortuna (California) | 222.64 mi (358.30 km) |
| South San Francisco to Fortuna Foothills (Arizona) | 569.12 mi (915.91 km) |
| South San Francisco to Foster City (California) | 10.82 mi (17.42 km) |
| South San Francisco to Fostoria (Ohio) | 2,078.98 mi (3,345.79 km) |
| South San Francisco to Fountain (Colorado) | 964.58 mi (1,552.34 km) |
| South San Francisco to Fountain Hills (Arizona) | 661.17 mi (1,064.05 km) |
| South San Francisco to Fountain Inn (South Carolina) | 2,235.27 mi (3,597.31 km) |
| South San Francisco to Fountain Valley (California) | 370.19 mi (595.76 km) |
| South San Francisco to Fountainebleau (Florida) | 2,581.36 mi (4,154.29 km) |
| South San Francisco to Four Corners (Oregon) | 503.48 mi (810.28 km) |
| South San Francisco to Four Corners (Texas) | 1,627.92 mi (2,619.89 km) |
| South San Francisco to Four Square Mile (Colorado) | 954.52 mi (1,536.15 km) |
| South San Francisco to Fox Crossing (Wisconsin) | 1,814.80 mi (2,920.64 km) |
| South San Francisco to Fox Lake (Illinois) | 1,827.94 mi (2,941.78 km) |
| South San Francisco to Framingham (Massachusetts) | 2,677.86 mi (4,309.60 km) |
