| South San Francisco to Carlsbad (California) | 426.03 mi (685.63 km) |
| South San Francisco to Carlsbad (New Mexico) | 1,088.61 mi (1,751.94 km) |
| South San Francisco to Carmel (Indiana) | 1,946.04 mi (3,131.84 km) |
| South San Francisco to Carmichael (California) | 89.97 mi (144.80 km) |
| South San Francisco to Carney (Maryland) | 2,456.73 mi (3,953.73 km) |
| South San Francisco to Carnot-Moon (Pennsylvania) | 2,250.34 mi (3,621.57 km) |
| South San Francisco to Carol Stream (Illinois) | 1,831.74 mi (2,947.90 km) |
| South San Francisco to Carolina (Puerto Rico) | 3,630.41 mi (5,842.59 km) |
| South San Francisco to Carolina Forest (South Carolina) | 2,433.80 mi (3,916.83 km) |
| South San Francisco to Carpentersville (Illinois) | 1,823.10 mi (2,933.99 km) |
| South San Francisco to Carpinteria (California) | 277.56 mi (446.70 km) |
| South San Francisco to Carrboro (North Carolina) | 2,379.20 mi (3,828.95 km) |
| South San Francisco to Carroll (Iowa) | 1,486.07 mi (2,391.60 km) |
| South San Francisco to Carrollton (Georgia) | 2,101.91 mi (3,382.70 km) |
| South San Francisco to Carrollton (Texas) | 1,469.42 mi (2,364.81 km) |
