| Omagh to Cocentaina | 1,140.61 mi (1,835.64 km) |
| Omagh to Coin | 1,244.24 mi (2,002.41 km) |
| Omagh to Colindres | 792.44 mi (1,275.31 km) |
| Omagh to Collado-Villalba | 976.08 mi (1,570.85 km) |
| Omagh to Colmenar Viejo | 976.12 mi (1,570.91 km) |
| Omagh to Colmenarejo | 980.98 mi (1,578.74 km) |
| Omagh to Conil de la Frontera | 1,267.32 mi (2,039.56 km) |
| Omagh to Consuegra | 1,059.18 mi (1,704.58 km) |
| Omagh to Corbera de Llobregat | 1,003.07 mi (1,614.29 km) |
| Omagh to Cordoba | 1,160.27 mi (1,867.27 km) |
| Omagh to Coria del Rio | 1,197.21 mi (1,926.73 km) |
| Omagh to Crevillente | 1,169.30 mi (1,881.81 km) |
| Omagh to Cuarte de Huerva | 944.64 mi (1,520.24 km) |
| Omagh to Cubellas | 1,011.52 mi (1,627.89 km) |
| Omagh to Cuellar | 921.40 mi (1,482.84 km) |
