| Thornton to Cividale del Friuli | 859.57 mi (1,383.34 km) |
| Thornton to Civita Castellana | 1,027.86 mi (1,654.18 km) |
| Thornton to Civitanova Marche | 1,012.31 mi (1,629.16 km) |
| Thornton to Civitavecchia | 1,021.73 mi (1,644.32 km) |
| Thornton to Civitella in Val di Chiana | 944.35 mi (1,519.78 km) |
| Thornton to Clusone | 756.37 mi (1,217.27 km) |
| Thornton to Coccaglio | 774.41 mi (1,246.29 km) |
| Thornton to Codigoro | 879.53 mi (1,415.47 km) |
| Thornton to Codogno | 788.38 mi (1,268.77 km) |
| Thornton to Codroipo | 850.60 mi (1,368.91 km) |
| Thornton to Cogoleto | 802.83 mi (1,292.03 km) |
| Thornton to Colle di Val d'Elsa | 928.34 mi (1,494.02 km) |
| Thornton to Colle Salvetti | 898.51 mi (1,446.00 km) |
| Thornton to Collecchio | 826.04 mi (1,329.38 km) |
| Thornton to Colleferro | 1,077.54 mi (1,734.13 km) |
