| Onalaska to Cocentaina | 4,474.73 mi (7,201.39 km) |
| Onalaska to Coin | 4,371.91 mi (7,035.90 km) |
| Onalaska to Colindres | 4,160.34 mi (6,695.41 km) |
| Onalaska to Collado-Villalba | 4,244.62 mi (6,831.06 km) |
| Onalaska to Colmenar Viejo | 4,254.02 mi (6,846.19 km) |
| Onalaska to Colmenarejo | 4,247.12 mi (6,835.09 km) |
| Onalaska to Conil de la Frontera | 4,328.45 mi (6,965.97 km) |
| Onalaska to Consuegra | 4,308.73 mi (6,934.24 km) |
| Onalaska to Corbera de Llobregat | 4,463.07 mi (7,182.61 km) |
| Onalaska to Cordoba | 4,321.01 mi (6,954.00 km) |
| Onalaska to Coria del Rio | 4,288.81 mi (6,902.18 km) |
| Onalaska to Crevillente | 4,479.61 mi (7,209.23 km) |
| Onalaska to Cuarte de Huerva | 4,337.79 mi (6,981.00 km) |
| Onalaska to Cubellas | 4,461.04 mi (7,179.36 km) |
| Onalaska to Cuellar | 4,201.33 mi (6,761.40 km) |
