| Southborough to Celano | 886.74 mi (1,427.06 km) |
| Southborough to Cento | 674.88 mi (1,086.11 km) |
| Southborough to Cepagatti | 889.40 mi (1,431.35 km) |
| Southborough to Ceprano | 913.91 mi (1,470.80 km) |
| Southborough to Cercola | 977.84 mi (1,573.69 km) |
| Southborough to Cerea | 650.09 mi (1,046.21 km) |
| Southborough to Cerese | 640.95 mi (1,031.50 km) |
| Southborough to Cerignola | 1,009.10 mi (1,623.98 km) |
| Southborough to Cermenate | 552.24 mi (888.74 km) |
| Southborough to Cernusco sul Naviglio | 569.74 mi (916.91 km) |
| Southborough to Cerreto Guidi | 710.63 mi (1,143.65 km) |
| Southborough to Cerro Maggiore | 552.85 mi (889.73 km) |
| Southborough to Certaldo | 727.28 mi (1,170.44 km) |
| Southborough to Cerveteri | 844.34 mi (1,358.83 km) |
| Southborough to Cervia | 735.48 mi (1,183.64 km) |
