| Eugene to Cocentaina | 5,691.99 mi (9,160.38 km) |
| Eugene to Coin | 5,656.91 mi (9,103.92 km) |
| Eugene to Colindres | 5,343.24 mi (8,599.12 km) |
| Eugene to Collado-Villalba | 5,471.64 mi (8,805.75 km) |
| Eugene to Colmenar Viejo | 5,478.39 mi (8,816.62 km) |
| Eugene to Colmenarejo | 5,475.20 mi (8,811.48 km) |
| Eugene to Conil de la Frontera | 5,630.44 mi (9,061.31 km) |
| Eugene to Consuegra | 5,547.57 mi (8,927.96 km) |
| Eugene to Corbera de Llobregat | 5,620.28 mi (9,044.96 km) |
| Eugene to Cordoba | 5,591.19 mi (8,998.16 km) |
| Eugene to Coria del Rio | 5,578.12 mi (8,977.12 km) |
| Eugene to Crevillente | 5,706.96 mi (9,184.46 km) |
| Eugene to Cuarte de Huerva | 5,521.76 mi (8,886.41 km) |
| Eugene to Cubellas | 5,623.78 mi (9,050.60 km) |
| Eugene to Cuellar | 5,420.73 mi (8,723.82 km) |
