| Seia to Cividale del Friuli | 1,129.36 mi (1,817.52 km) |
| Seia to Civita Castellana | 1,048.55 mi (1,687.48 km) |
| Seia to Civitanova Marche | 1,117.60 mi (1,798.60 km) |
| Seia to Civitavecchia | 1,017.29 mi (1,637.17 km) |
| Seia to Civitella in Val di Chiana | 1,017.10 mi (1,636.86 km) |
| Seia to Clusone | 963.84 mi (1,551.15 km) |
| Seia to Coccaglio | 959.02 mi (1,543.39 km) |
| Seia to Codigoro | 1,049.57 mi (1,689.12 km) |
| Seia to Codogno | 939.05 mi (1,511.25 km) |
| Seia to Codroipo | 1,106.01 mi (1,779.95 km) |
| Seia to Cogoleto | 876.17 mi (1,410.06 km) |
| Seia to Colle di Val d'Elsa | 987.83 mi (1,589.76 km) |
| Seia to Colle Salvetti | 956.96 mi (1,540.08 km) |
| Seia to Collecchio | 957.00 mi (1,540.15 km) |
| Seia to Colleferro | 1,080.30 mi (1,738.58 km) |
