| Olean to Cadiz | 3,759.66 mi (6,050.58 km) |
| Olean to Calafell | 3,967.66 mi (6,385.33 km) |
| Olean to Calahorra | 3,771.34 mi (6,069.39 km) |
| Olean to Calasparra | 3,919.89 mi (6,308.46 km) |
| Olean to Calatayud | 3,817.37 mi (6,143.46 km) |
| Olean to Caldas de Montbuy | 3,979.67 mi (6,404.65 km) |
| Olean to Caldas de Reyes | 3,456.91 mi (5,563.37 km) |
| Olean to Calella | 4,002.44 mi (6,441.30 km) |
| Olean to Callosa de Segura | 3,962.10 mi (6,376.38 km) |
| Olean to Calpe | 3,986.77 mi (6,416.09 km) |
| Olean to Calvia | 4,067.42 mi (6,545.87 km) |
| Olean to Camas | 3,742.88 mi (6,023.59 km) |
| Olean to Cambados | 3,452.40 mi (5,556.10 km) |
| Olean to Cambre | 3,451.51 mi (5,554.66 km) |
| Olean to Cambrils | 3,949.07 mi (6,355.41 km) |
