| Os to Castelletto sopra Ticino | 1,010.84 mi (1,626.79 km) |
| Os to Castelli Calepio | 1,024.45 mi (1,648.69 km) |
| Os to Castelnovo ne' Monti | 1,110.11 mi (1,786.55 km) |
| Os to Castelnuovo Berardenga | 1,193.19 mi (1,920.25 km) |
| Os to Castelnuovo di Porto | 1,284.91 mi (2,067.86 km) |
| Os to Castelnuovo di Verona | 1,044.91 mi (1,681.62 km) |
| Os to Castelnuovo Rangone | 1,106.43 mi (1,780.62 km) |
| Os to Castelvetrano | 1,590.33 mi (2,559.39 km) |
| Os to Castelvetro di Modena | 1,109.97 mi (1,786.33 km) |
| Os to Castenaso | 1,113.90 mi (1,792.65 km) |
| Os to Castenedolo | 1,038.55 mi (1,671.38 km) |
| Os to Castiglion Fiorentino | 1,197.20 mi (1,926.71 km) |
| Os to Castiglione del Lago | 1,212.35 mi (1,951.09 km) |
| Os to Castiglione delle Stiviere | 1,044.96 mi (1,681.71 km) |
| Os to Castrolibero | 1,517.44 mi (2,442.08 km) |
