| Saint-Omer to Cologno al Serio | 494.38 mi (795.63 km) |
| Saint-Omer to Cologno Monzese | 484.09 mi (779.07 km) |
| Saint-Omer to Colorno | 550.10 mi (885.31 km) |
| Saint-Omer to Comacchio | 621.39 mi (1,000.03 km) |
| Saint-Omer to Comiso | 1,131.07 mi (1,820.29 km) |
| Saint-Omer to Como | 463.19 mi (745.43 km) |
| Saint-Omer to Concordia Sagittaria | 595.54 mi (958.42 km) |
| Saint-Omer to Concorezzo | 482.61 mi (776.69 km) |
| Saint-Omer to Conegliano | 569.72 mi (916.87 km) |
| Saint-Omer to Conselice | 618.77 mi (995.82 km) |
| Saint-Omer to Conselve | 584.40 mi (940.51 km) |
| Saint-Omer to Conversano | 980.36 mi (1,577.74 km) |
| Saint-Omer to Copertino | 1,049.00 mi (1,688.21 km) |
| Saint-Omer to Copparo | 599.52 mi (964.84 km) |
| Saint-Omer to Corato | 946.27 mi (1,522.88 km) |
