| Southborough to Campo de Criptana | 828.76 mi (1,333.75 km) |
| Southborough to Campos del Puerto | 821.23 mi (1,321.65 km) |
| Southborough to Canals | 843.85 mi (1,358.05 km) |
| Southborough to Candelaria | 1,797.03 mi (2,892.04 km) |
| Southborough to Canet de Mar | 670.21 mi (1,078.60 km) |
| Southborough to Cangas | 748.10 mi (1,203.94 km) |
| Southborough to Cangas de Narcea | 637.18 mi (1,025.44 km) |
| Southborough to Canovellas | 666.20 mi (1,072.14 km) |
| Southborough to Canteras | 938.24 mi (1,509.95 km) |
| Southborough to Cantillana | 983.00 mi (1,581.99 km) |
| Southborough to Capdepera | 806.36 mi (1,297.71 km) |
| Southborough to Carballo | 690.13 mi (1,110.66 km) |
| Southborough to Carcagente | 832.43 mi (1,339.67 km) |
| Southborough to Cardedeu | 665.16 mi (1,070.48 km) |
| Southborough to Carlet | 825.39 mi (1,328.34 km) |
