| Olen to Cassino | 791.34 mi (1,273.53 km) |
| Olen to Castagneto Carducci | 613.73 mi (987.71 km) |
| Olen to Castano Primo | 426.52 mi (686.43 km) |
| Olen to Castel Bolognese | 571.47 mi (919.69 km) |
| Olen to Castel Gandolfo | 747.39 mi (1,202.81 km) |
| Olen to Castel Goffredo | 479.81 mi (772.18 km) |
| Olen to Castel Maggiore | 545.57 mi (878.01 km) |
| Olen to Castel Mella | 459.81 mi (739.99 km) |
| Olen to Castel San Giorgio | 856.71 mi (1,378.75 km) |
| Olen to Castel San Giovanni | 471.33 mi (758.53 km) |
| Olen to Castel San Pietro Terme | 560.96 mi (902.78 km) |
| Olen to Castel Volturno | 820.60 mi (1,320.63 km) |
| Olen to Castelbuono | 1,018.62 mi (1,639.31 km) |
| Olen to Casteldaccia | 999.22 mi (1,608.09 km) |
| Olen to Castelfidardo | 668.35 mi (1,075.60 km) |
