| Dayton to Cividale del Friuli | 4,631.29 mi (7,453.34 km) |
| Dayton to Civita Castellana | 4,738.61 mi (7,626.05 km) |
| Dayton to Civitanova Marche | 4,753.63 mi (7,650.22 km) |
| Dayton to Civitavecchia | 4,720.70 mi (7,597.23 km) |
| Dayton to Civitella in Val di Chiana | 4,665.78 mi (7,508.84 km) |
| Dayton to Clusone | 4,499.68 mi (7,241.54 km) |
| Dayton to Coccaglio | 4,512.69 mi (7,262.46 km) |
| Dayton to Codigoro | 4,627.42 mi (7,447.11 km) |
| Dayton to Codogno | 4,516.46 mi (7,268.54 km) |
| Dayton to Codroipo | 4,618.57 mi (7,432.87 km) |
| Dayton to Cogoleto | 4,501.09 mi (7,243.80 km) |
| Dayton to Colle di Val d'Elsa | 4,642.16 mi (7,470.83 km) |
| Dayton to Colle Salvetti | 4,607.38 mi (7,414.87 km) |
| Dayton to Collecchio | 4,552.82 mi (7,327.05 km) |
| Dayton to Colleferro | 4,786.46 mi (7,703.07 km) |
