| Olean to Carmona | 3,759.83 mi (6,050.87 km) |
| Olean to Cartagena | 3,975.74 mi (6,398.34 km) |
| Olean to Cartama | 3,833.70 mi (6,169.75 km) |
| Olean to Cartaya | 3,693.27 mi (5,943.74 km) |
| Olean to Caspe | 3,894.04 mi (6,266.86 km) |
| Olean to Cassa de la Selva | 4,002.38 mi (6,441.21 km) |
| Olean to Castalla | 3,955.22 mi (6,365.31 km) |
| Olean to Castellbisbal | 3,976.73 mi (6,399.93 km) |
| Olean to Castelldefels | 3,983.26 mi (6,410.44 km) |
| Olean to Castello de Ampurias | 3,998.56 mi (6,435.06 km) |
| Olean to Castellon de la Plana | 3,936.61 mi (6,335.37 km) |
| Olean to Castilleja de la Cuesta | 3,742.71 mi (6,023.31 km) |
| Olean to Catarroja | 3,939.54 mi (6,340.07 km) |
| Olean to Catral | 3,964.29 mi (6,379.91 km) |
| Olean to Caudete | 3,936.68 mi (6,335.48 km) |
