| South San Francisco to Carrollwood (Florida) | 2,389.52 mi (3,845.56 km) |
| South San Francisco to Carson (California) | 352.12 mi (566.68 km) |
| South San Francisco to Carson City (Nevada) | 177.85 mi (286.22 km) |
| South San Francisco to Carteret (New Jersey) | 2,558.93 mi (4,118.20 km) |
| South San Francisco to Cartersville (Georgia) | 2,104.87 mi (3,387.46 km) |
| South San Francisco to Carthage (Missouri) | 1,536.77 mi (2,473.19 km) |
| South San Francisco to Cary (Illinois) | 1,824.97 mi (2,937.01 km) |
| South San Francisco to Cary (North Carolina) | 2,396.40 mi (3,856.64 km) |
| South San Francisco to Casa de Oro-Mount Helix (California) | 456.80 mi (735.15 km) |
| South San Francisco to Casa Grande (Arizona) | 684.13 mi (1,100.99 km) |
| South San Francisco to Casas Adobes (Arizona) | 741.90 mi (1,193.98 km) |
| South San Francisco to Cascades (Virginia) | 2,416.78 mi (3,889.43 km) |
| South San Francisco to Casper (Wyoming) | 919.64 mi (1,480.02 km) |
| South San Francisco to Casselberry (Florida) | 2,436.31 mi (3,920.86 km) |
| South San Francisco to Castaic (California) | 304.56 mi (490.14 km) |
