| Siran to Cividale del Friuli | 1,351.24 mi (2,174.61 km) |
| Siran to Civita Castellana | 1,389.87 mi (2,236.77 km) |
| Siran to Civitanova Marche | 1,321.33 mi (2,126.47 km) |
| Siran to Civitavecchia | 1,421.85 mi (2,288.25 km) |
| Siran to Civitella in Val di Chiana | 1,422.65 mi (2,289.53 km) |
| Siran to Clusone | 1,515.71 mi (2,439.30 km) |
| Siran to Coccaglio | 1,512.74 mi (2,434.52 km) |
| Siran to Codigoro | 1,405.57 mi (2,262.04 km) |
| Siran to Codogno | 1,524.45 mi (2,453.36 km) |
| Siran to Codroipo | 1,371.50 mi (2,207.22 km) |
| Siran to Cogoleto | 1,575.23 mi (2,535.10 km) |
| Siran to Colle di Val d'Elsa | 1,451.94 mi (2,336.67 km) |
| Siran to Colle Salvetti | 1,484.32 mi (2,388.78 km) |
| Siran to Collecchio | 1,498.34 mi (2,411.34 km) |
| Siran to Colleferro | 1,361.24 mi (2,190.71 km) |
