| Olen to Castelli Calepio | 445.82 mi (717.47 km) |
| Olen to Castelnovo ne' Monti | 530.43 mi (853.65 km) |
| Olen to Castelnuovo Berardenga | 622.34 mi (1,001.56 km) |
| Olen to Castelnuovo di Porto | 720.08 mi (1,158.86 km) |
| Olen to Castelnuovo di Verona | 479.23 mi (771.25 km) |
| Olen to Castelnuovo Rangone | 535.78 mi (862.25 km) |
| Olen to Castelvetrano | 1,008.24 mi (1,622.60 km) |
| Olen to Castelvetro di Modena | 539.19 mi (867.74 km) |
| Olen to Castenaso | 551.59 mi (887.70 km) |
| Olen to Castenedolo | 465.16 mi (748.60 km) |
| Olen to Castiglion Fiorentino | 632.44 mi (1,017.82 km) |
| Olen to Castiglione del Lago | 648.00 mi (1,042.85 km) |
| Olen to Castiglione delle Stiviere | 474.38 mi (763.45 km) |
| Olen to Castrolibero | 984.15 mi (1,583.84 km) |
| Olen to Castrovillari | 954.42 mi (1,536.00 km) |
