| Olhao to Cividale del Friuli | 1,260.17 mi (2,028.05 km) |
| Olhao to Civita Castellana | 1,133.76 mi (1,824.60 km) |
| Olhao to Civitanova Marche | 1,214.55 mi (1,954.62 km) |
| Olhao to Civitavecchia | 1,100.40 mi (1,770.92 km) |
| Olhao to Civitella in Val di Chiana | 1,118.82 mi (1,800.57 km) |
| Olhao to Clusone | 1,102.11 mi (1,773.67 km) |
| Olhao to Coccaglio | 1,093.32 mi (1,759.53 km) |
| Olhao to Codigoro | 1,168.82 mi (1,881.04 km) |
| Olhao to Codogno | 1,069.19 mi (1,720.70 km) |
| Olhao to Codroipo | 1,236.41 mi (1,989.81 km) |
| Olhao to Cogoleto | 999.51 mi (1,608.55 km) |
| Olhao to Colle di Val d'Elsa | 1,090.48 mi (1,754.96 km) |
| Olhao to Colle Salvetti | 1,063.85 mi (1,712.10 km) |
| Olhao to Collecchio | 1,080.25 mi (1,738.49 km) |
| Olhao to Colleferro | 1,157.14 mi (1,862.23 km) |
