| Barreiro to Cividale del Friuli | 1,252.26 mi (2,015.32 km) |
| Barreiro to Civita Castellana | 1,152.87 mi (1,855.37 km) |
| Barreiro to Civitanova Marche | 1,227.24 mi (1,975.05 km) |
| Barreiro to Civitavecchia | 1,120.53 mi (1,803.32 km) |
| Barreiro to Civitella in Val di Chiana | 1,128.26 mi (1,815.77 km) |
| Barreiro to Clusone | 1,088.81 mi (1,752.27 km) |
| Barreiro to Coccaglio | 1,082.56 mi (1,742.21 km) |
| Barreiro to Codigoro | 1,167.88 mi (1,879.52 km) |
| Barreiro to Codogno | 1,060.98 mi (1,707.49 km) |
| Barreiro to Codroipo | 1,228.69 mi (1,977.39 km) |
| Barreiro to Cogoleto | 995.23 mi (1,601.66 km) |
| Barreiro to Colle di Val d'Elsa | 1,099.23 mi (1,769.04 km) |
| Barreiro to Colle Salvetti | 1,069.94 mi (1,721.90 km) |
| Barreiro to Collecchio | 1,076.43 mi (1,732.35 km) |
| Barreiro to Colleferro | 1,181.10 mi (1,900.80 km) |
