| Os to Chivasso | 1,043.60 mi (1,679.51 km) |
| Os to Ciampino | 1,308.50 mi (2,105.82 km) |
| Os to Cicciano | 1,385.77 mi (2,230.18 km) |
| Os to Cingoli | 1,209.02 mi (1,945.73 km) |
| Os to Cinisello Balsamo | 1,025.59 mi (1,650.52 km) |
| Os to Cinisi | 1,560.19 mi (2,510.88 km) |
| Os to Cirie | 1,039.49 mi (1,672.90 km) |
| Os to Ciro Marina | 1,526.65 mi (2,456.91 km) |
| Os to Cislago | 1,017.25 mi (1,637.10 km) |
| Os to Cisterna di Latina | 1,324.94 mi (2,132.28 km) |
| Os to Cisternino | 1,440.61 mi (2,318.44 km) |
| Os to Citta di Castello | 1,192.41 mi (1,919.00 km) |
| Os to Citta Sant'Angelo | 1,275.82 mi (2,053.23 km) |
| Os to Cittadella | 1,039.70 mi (1,673.24 km) |
| Os to Cittanova | 1,580.75 mi (2,543.97 km) |
