| Southborough to Cognac | 378.50 mi (609.14 km) |
| Southborough to Cogolin | 619.92 mi (997.66 km) |
| Southborough to Colmar | 381.79 mi (614.43 km) |
| Southborough to Colombes | 177.88 mi (286.27 km) |
| Southborough to Colomiers | 523.76 mi (842.91 km) |
| Southborough to Combs-la-Ville | 200.02 mi (321.90 km) |
| Southborough to Comines | 122.48 mi (197.12 km) |
| Southborough to Compiegne | 165.17 mi (265.81 km) |
| Southborough to Concarneau | 294.39 mi (473.78 km) |
| Southborough to Conde-sur-l'Escaut | 153.26 mi (246.65 km) |
| Southborough to Conflans-Sainte-Honorine | 169.96 mi (273.53 km) |
| Southborough to Corbas | 434.75 mi (699.67 km) |
| Southborough to Corbeil-Essonnes | 201.67 mi (324.56 km) |
| Southborough to Cormeilles-en-Parisis | 173.72 mi (279.58 km) |
| Southborough to Cosne sur Loire | 285.41 mi (459.32 km) |
