| Southborough to Caltagirone | 1,188.57 mi (1,912.82 km) |
| Southborough to Caltanissetta | 1,160.81 mi (1,868.14 km) |
| Southborough to Calvisano | 612.43 mi (985.61 km) |
| Southborough to Calvizzano | 970.62 mi (1,562.06 km) |
| Southborough to Camaiore | 683.14 mi (1,099.42 km) |
| Southborough to Cameri | 548.22 mi (882.28 km) |
| Southborough to Camisano Vicentino | 653.50 mi (1,051.70 km) |
| Southborough to Campagna | 1,013.28 mi (1,630.72 km) |
| Southborough to Campagnano di Roma | 846.00 mi (1,361.50 km) |
| Southborough to Campi Bisenzio | 716.14 mi (1,152.52 km) |
| Southborough to Campi Salentina | 1,128.00 mi (1,815.34 km) |
| Southborough to Campiglia Marittima | 739.92 mi (1,190.79 km) |
| Southborough to Campobasso | 951.21 mi (1,530.82 km) |
| Southborough to Campobello di Licata | 1,170.96 mi (1,884.48 km) |
| Southborough to Campobello di Mazara | 1,116.13 mi (1,796.24 km) |
