| Omurtag to Coin | 1,700.35 mi (2,736.45 km) |
| Omurtag to Colindres | 1,495.07 mi (2,406.09 km) |
| Omurtag to Collado-Villalba | 1,566.08 mi (2,520.35 km) |
| Omurtag to Colmenar Viejo | 1,553.38 mi (2,499.92 km) |
| Omurtag to Colmenarejo | 1,567.93 mi (2,523.33 km) |
| Omurtag to Conil de la Frontera | 1,779.16 mi (2,863.27 km) |
| Omurtag to Consuegra | 1,570.39 mi (2,527.30 km) |
| Omurtag to Corbera de Llobregat | 1,253.03 mi (2,016.56 km) |
| Omurtag to Cordoba | 1,668.13 mi (2,684.59 km) |
| Omurtag to Coria del Rio | 1,748.38 mi (2,813.74 km) |
| Omurtag to Crevillente | 1,458.59 mi (2,347.37 km) |
| Omurtag to Cuarte de Huerva | 1,393.65 mi (2,242.87 km) |
| Omurtag to Cubellas | 1,269.44 mi (2,042.97 km) |
| Omurtag to Cuellar | 1,567.24 mi (2,522.23 km) |
| Omurtag to Cuenca | 1,483.85 mi (2,388.02 km) |
