| Southborough to Collegno | 538.16 mi (866.09 km) |
| Southborough to Cologno al Serio | 578.82 mi (931.52 km) |
| Southborough to Cologno Monzese | 567.31 mi (913.00 km) |
| Southborough to Colorno | 634.18 mi (1,020.61 km) |
| Southborough to Comacchio | 708.18 mi (1,139.71 km) |
| Southborough to Comiso | 1,208.05 mi (1,944.17 km) |
| Southborough to Como | 546.85 mi (880.07 km) |
| Southborough to Concordia Sagittaria | 685.10 mi (1,102.57 km) |
| Southborough to Concorezzo | 566.19 mi (911.19 km) |
| Southborough to Conegliano | 658.97 mi (1,060.52 km) |
| Southborough to Conselice | 704.60 mi (1,133.95 km) |
| Southborough to Conselve | 671.88 mi (1,081.28 km) |
| Southborough to Conversano | 1,067.21 mi (1,717.51 km) |
| Southborough to Copertino | 1,135.96 mi (1,828.15 km) |
| Southborough to Copparo | 686.22 mi (1,104.36 km) |
