| South San Francisco to Clemson (South Carolina) | 2,202.36 mi (3,544.35 km) |
| South San Francisco to Clermont (Florida) | 2,418.40 mi (3,892.04 km) |
| South San Francisco to Cleveland (Mississippi) | 1,789.95 mi (2,880.64 km) |
| South San Francisco to Cleveland (Ohio) | 2,165.79 mi (3,485.51 km) |
| South San Francisco to Cleveland (Tennessee) | 2,080.80 mi (3,348.72 km) |
| South San Francisco to Cleveland Heights (Ohio) | 2,171.52 mi (3,494.73 km) |
| South San Francisco to Cliffside Park (New Jersey) | 2,568.02 mi (4,132.83 km) |
| South San Francisco to Clifton (Colorado) | 761.81 mi (1,226.02 km) |
| South San Francisco to Clifton (New Jersey) | 2,558.78 mi (4,117.95 km) |
| South San Francisco to Clinton (Iowa) | 1,723.37 mi (2,773.50 km) |
| South San Francisco to Clinton (Maryland) | 2,446.49 mi (3,937.25 km) |
| South San Francisco to Clinton (Mississippi) | 1,842.71 mi (2,965.56 km) |
| South San Francisco to Clinton (Utah) | 602.50 mi (969.63 km) |
| South San Francisco to Clive (Iowa) | 1,540.03 mi (2,478.44 km) |
| South San Francisco to Cloquet (Minnesota) | 1,642.75 mi (2,643.75 km) |
