| Os to Cassina de' Pecchi | 1,028.80 mi (1,655.70 km) |
| Os to Cassino | 1,341.75 mi (2,159.34 km) |
| Os to Castagneto Carducci | 1,198.12 mi (1,928.19 km) |
| Os to Castano Primo | 1,023.00 mi (1,646.35 km) |
| Os to Castel Bolognese | 1,130.09 mi (1,818.71 km) |
| Os to Castel Gandolfo | 1,312.61 mi (2,112.43 km) |
| Os to Castel Goffredo | 1,051.70 mi (1,692.56 km) |
| Os to Castel Maggiore | 1,109.08 mi (1,784.90 km) |
| Os to Castel Mella | 1,035.40 mi (1,666.32 km) |
| Os to Castel San Giorgio | 1,400.10 mi (2,253.24 km) |
| Os to Castel San Giovanni | 1,061.20 mi (1,707.83 km) |
| Os to Castel San Pietro Terme | 1,122.39 mi (1,806.32 km) |
| Os to Castel Volturno | 1,373.04 mi (2,209.70 km) |
| Os to Castelbuono | 1,585.91 mi (2,552.28 km) |
| Os to Casteldaccia | 1,572.27 mi (2,530.32 km) |
