| Ilmenau to Coin | 1,240.10 mi (1,995.75 km) |
| Ilmenau to Colindres | 840.92 mi (1,353.33 km) |
| Ilmenau to Collado-Villalba | 997.43 mi (1,605.21 km) |
| Ilmenau to Colmenar Viejo | 987.79 mi (1,589.70 km) |
| Ilmenau to Colmenarejo | 1,001.52 mi (1,611.79 km) |
| Ilmenau to Conil de la Frontera | 1,304.71 mi (2,099.73 km) |
| Ilmenau to Consuegra | 1,046.78 mi (1,684.62 km) |
| Ilmenau to Corbera de Llobregat | 770.59 mi (1,240.15 km) |
| Ilmenau to Cordoba | 1,171.98 mi (1,886.11 km) |
| Ilmenau to Coria del Rio | 1,246.65 mi (2,006.29 km) |
| Ilmenau to Crevillente | 1,032.94 mi (1,662.36 km) |
| Ilmenau to Cuarte de Huerva | 844.44 mi (1,358.99 km) |
| Ilmenau to Cubellas | 789.73 mi (1,270.94 km) |
| Ilmenau to Cuellar | 968.78 mi (1,559.11 km) |
| Ilmenau to Cuenca | 966.91 mi (1,556.09 km) |
