| South San Francisco to Cloverleaf (Texas) | 1,650.39 mi (2,656.04 km) |
| South San Francisco to Cloverly (Maryland) | 2,436.22 mi (3,920.72 km) |
| South San Francisco to Clovis (California) | 160.97 mi (259.06 km) |
| South San Francisco to Clovis (New Mexico) | 1,094.80 mi (1,761.92 km) |
| South San Francisco to Clute (Texas) | 1,662.50 mi (2,675.53 km) |
| South San Francisco to Coachella (California) | 446.02 mi (717.80 km) |
| South San Francisco to Coalinga (California) | 155.93 mi (250.94 km) |
| South San Francisco to Coamo (Puerto Rico) | 3,622.15 mi (5,829.28 km) |
| South San Francisco to Coatesville (Pennsylvania) | 2,485.08 mi (3,999.35 km) |
| South San Francisco to Cockeysville (Maryland) | 2,450.12 mi (3,943.09 km) |
| South San Francisco to Cocoa (Florida) | 2,475.03 mi (3,983.18 km) |
| South San Francisco to Cocoa Beach (Florida) | 2,484.18 mi (3,997.91 km) |
| South San Francisco to Coconut Creek (Florida) | 2,573.29 mi (4,141.30 km) |
| South San Francisco to Coeur d'Alene (Idaho) | 750.39 mi (1,207.63 km) |
| South San Francisco to Cohoes (New York) | 2,558.48 mi (4,117.47 km) |
