| Omagh to Cognac | 686.71 mi (1,105.15 km) |
| Omagh to Cogolin | 999.93 mi (1,609.23 km) |
| Omagh to Colmar | 773.38 mi (1,244.63 km) |
| Omagh to Colombes | 564.63 mi (908.68 km) |
| Omagh to Colomiers | 851.42 mi (1,370.23 km) |
| Omagh to Combs-la-Ville | 587.01 mi (944.71 km) |
| Omagh to Comines | 505.33 mi (813.25 km) |
| Omagh to Compiegne | 558.44 mi (898.72 km) |
| Omagh to Concarneau | 486.18 mi (782.43 km) |
| Omagh to Conde-sur-l'Escaut | 538.67 mi (866.90 km) |
| Omagh to Conflans-Sainte-Honorine | 556.06 mi (894.89 km) |
| Omagh to Corbas | 817.22 mi (1,315.19 km) |
| Omagh to Corbeil-Essonnes | 587.52 mi (945.52 km) |
| Omagh to Cormeilles-en-Parisis | 560.51 mi (902.05 km) |
| Omagh to Cosne sur Loire | 664.54 mi (1,069.47 km) |
