| Southborough to Cehegin | 908.45 mi (1,462.01 km) |
| Southborough to Cervello | 679.38 mi (1,093.36 km) |
| Southborough to Cervera | 657.71 mi (1,058.48 km) |
| Southborough to Ceuti | 906.91 mi (1,459.52 km) |
| Southborough to Cheste | 808.32 mi (1,300.86 km) |
| Southborough to Chiclana de la Frontera | 1,066.70 mi (1,716.69 km) |
| Southborough to Chipiona | 1,049.91 mi (1,689.66 km) |
| Southborough to Chiva | 808.99 mi (1,301.94 km) |
| Southborough to Churriana de la Vega | 986.88 mi (1,588.23 km) |
| Southborough to Ciempozuelos | 782.57 mi (1,259.43 km) |
| Southborough to Cieza | 896.49 mi (1,442.76 km) |
| Southborough to Cisterniga | 699.86 mi (1,126.32 km) |
| Southborough to Ciudad de Melilla | 1,108.60 mi (1,784.12 km) |
| Southborough to Ciudad Real | 865.34 mi (1,392.63 km) |
| Southborough to Ciudad-Rodrigo | 799.02 mi (1,285.90 km) |
