| Olbia to Collegno | 303.51 mi (488.46 km) |
| Olbia to Cologno al Serio | 322.59 mi (519.15 km) |
| Olbia to Cologno Monzese | 318.85 mi (513.13 km) |
| Olbia to Colorno | 281.09 mi (452.37 km) |
| Olbia to Comacchio | 294.63 mi (474.15 km) |
| Olbia to Comiso | 387.48 mi (623.59 km) |
| Olbia to Como | 338.75 mi (545.17 km) |
| Olbia to Concordia Sagittaria | 374.92 mi (603.38 km) |
| Olbia to Concorezzo | 322.98 mi (519.78 km) |
| Olbia to Conegliano | 370.94 mi (596.97 km) |
| Olbia to Conselice | 275.47 mi (443.32 km) |
| Olbia to Conselve | 321.24 mi (516.98 km) |
| Olbia to Conversano | 397.42 mi (639.58 km) |
| Olbia to Copertino | 450.65 mi (725.26 km) |
| Olbia to Copparo | 299.45 mi (481.91 km) |
