| Olbia to Busto Arsizio | 326.05 mi (524.72 km) |
| Olbia to Busto Garolfo | 321.46 mi (517.34 km) |
| Olbia to Cabras | 84.86 mi (136.57 km) |
| Olbia to Cadelbosco di Sopra | 271.78 mi (437.38 km) |
| Olbia to Cadoneghe | 336.31 mi (541.24 km) |
| Olbia to Cagli | 243.01 mi (391.08 km) |
| Olbia to Cagliari | 118.49 mi (190.69 km) |
| Olbia to Cairo Montenotte | 248.69 mi (400.23 km) |
| Olbia to Caivano | 250.53 mi (403.19 km) |
| Olbia to Calcinaia | 199.48 mi (321.04 km) |
| Olbia to Calcinato | 317.14 mi (510.39 km) |
| Olbia to Calderara di Reno | 267.63 mi (430.71 km) |
| Olbia to Caldogno | 338.76 mi (545.18 km) |
| Olbia to Calenzano | 220.84 mi (355.42 km) |
| Olbia to Calolziocorte | 337.42 mi (543.02 km) |
