| South San Francisco to Petaluma (California) | 42.20 mi (67.91 km) |
| South San Francisco to Petersburg (Virginia) | 2,446.41 mi (3,937.12 km) |
| South San Francisco to Pflugerville (Texas) | 1,499.91 mi (2,413.86 km) |
| South San Francisco to Pharr (Texas) | 1,620.49 mi (2,607.92 km) |
| South San Francisco to Phelan (California) | 352.16 mi (566.75 km) |
| South San Francisco to Phenix City (Alabama) | 2,130.90 mi (3,429.35 km) |
| South San Francisco to Philadelphia (Pennsylvania) | 2,520.31 mi (4,056.05 km) |
| South San Francisco to Phillipsburg (New Jersey) | 2,508.48 mi (4,037.01 km) |
| South San Francisco to Phoenix (Arizona) | 644.64 mi (1,037.46 km) |
| South San Francisco to Phoenixville (Pennsylvania) | 2,498.52 mi (4,020.97 km) |
| South San Francisco to Picayune (Mississippi) | 1,926.55 mi (3,100.49 km) |
| South San Francisco to Pickerington (Ohio) | 2,124.04 mi (3,418.31 km) |
| South San Francisco to Pico Rivera (California) | 350.55 mi (564.16 km) |
| South San Francisco to Piedmont (California) | 15.59 mi (25.09 km) |
| South San Francisco to Pierre (South Dakota) | 1,237.30 mi (1,991.24 km) |
