| South San Francisco to Clacton-on-Sea | 5,383.77 mi (8,664.34 km) |
| South San Francisco to Clay Cross | 5,240.93 mi (8,434.47 km) |
| South San Francisco to Clayton | 5,198.95 mi (8,366.90 km) |
| South San Francisco to Clayton le Moors | 5,182.82 mi (8,340.94 km) |
| South San Francisco to Cleckheaton | 5,204.46 mi (8,375.77 km) |
| South San Francisco to Cleethorpes | 5,261.38 mi (8,467.38 km) |
| South San Francisco to Clevedon | 5,282.73 mi (8,501.73 km) |
| South San Francisco to Clifton | 5,260.62 mi (8,466.15 km) |
| South San Francisco to Clifton | 5,210.05 mi (8,384.76 km) |
| South San Francisco to Cliftonville | 5,411.88 mi (8,709.58 km) |
| South San Francisco to Clitheroe | 5,177.92 mi (8,333.06 km) |
| South San Francisco to Clydebank | 5,023.24 mi (8,084.13 km) |
| South San Francisco to Coalville | 5,263.93 mi (8,471.48 km) |
| South San Francisco to Coatbridge | 5,035.58 mi (8,103.99 km) |
| South San Francisco to Cobham | 5,361.70 mi (8,628.83 km) |
