| Southborough to Cabestany | 599.22 mi (964.35 km) |
| Southborough to Cabries | 584.32 mi (940.38 km) |
| Southborough to Cachan | 187.60 mi (301.91 km) |
| Southborough to Caen | 139.65 mi (224.74 km) |
| Southborough to Cagnes-sur-Mer | 609.14 mi (980.32 km) |
| Southborough to Cahors | 466.95 mi (751.49 km) |
| Southborough to Calais | 70.64 mi (113.68 km) |
| Southborough to Caluire-et-Cuire | 425.74 mi (685.17 km) |
| Southborough to Cambrai | 146.73 mi (236.14 km) |
| Southborough to Canet-en-Roussillon | 598.17 mi (962.66 km) |
| Southborough to Cannes | 612.68 mi (986.02 km) |
| Southborough to Canteleu | 122.86 mi (197.73 km) |
| Southborough to Capbreton | 525.43 mi (845.59 km) |
| Southborough to Carcassonne | 557.87 mi (897.81 km) |
| Southborough to Carmaux | 499.10 mi (803.22 km) |
