| Olbia to Cassina de' Pecchi | 317.90 mi (511.61 km) |
| Olbia to Cassino | 228.80 mi (368.21 km) |
| Olbia to Castagneto Carducci | 165.39 mi (266.16 km) |
| Olbia to Castano Primo | 322.25 mi (518.61 km) |
| Olbia to Castel Bolognese | 262.39 mi (422.27 km) |
| Olbia to Castel Gandolfo | 173.28 mi (278.87 km) |
| Olbia to Castel Goffredo | 306.69 mi (493.57 km) |
| Olbia to Castel Maggiore | 269.37 mi (433.51 km) |
| Olbia to Castel Mella | 318.36 mi (512.35 km) |
| Olbia to Castel San Giorgio | 271.89 mi (437.56 km) |
| Olbia to Castel San Giovanni | 285.60 mi (459.63 km) |
| Olbia to Castel San Pietro Terme | 262.90 mi (423.10 km) |
| Olbia to Castel Volturno | 230.53 mi (371.00 km) |
| Olbia to Castelbuono | 320.49 mi (515.77 km) |
| Olbia to Casteldaccia | 292.33 mi (470.46 km) |
