| Olhao to Collegno | 974.32 mi (1,568.01 km) |
| Olhao to Cologno al Serio | 1,081.91 mi (1,741.17 km) |
| Olhao to Cologno Monzese | 1,062.04 mi (1,709.19 km) |
| Olhao to Colorno | 1,092.78 mi (1,758.66 km) |
| Olhao to Comacchio | 1,168.70 mi (1,880.84 km) |
| Olhao to Comiso | 1,235.62 mi (1,988.53 km) |
| Olhao to Como | 1,063.06 mi (1,710.83 km) |
| Olhao to Concordia Sagittaria | 1,225.51 mi (1,972.28 km) |
| Olhao to Concorezzo | 1,066.47 mi (1,716.32 km) |
| Olhao to Conegliano | 1,204.20 mi (1,937.98 km) |
| Olhao to Conselice | 1,148.19 mi (1,847.83 km) |
| Olhao to Conselve | 1,167.51 mi (1,878.92 km) |
| Olhao to Conversano | 1,362.64 mi (2,192.96 km) |
| Olhao to Copertino | 1,409.81 mi (2,268.88 km) |
| Olhao to Copparo | 1,157.50 mi (1,862.81 km) |
