| Napa to Cividale del Friuli | 5,993.17 mi (9,645.08 km) |
| Napa to Civita Castellana | 6,184.10 mi (9,952.34 km) |
| Napa to Civitanova Marche | 6,163.22 mi (9,918.74 km) |
| Napa to Civitavecchia | 6,177.81 mi (9,942.22 km) |
| Napa to Civitella in Val di Chiana | 6,100.31 mi (9,817.50 km) |
| Napa to Clusone | 5,910.91 mi (9,512.69 km) |
| Napa to Coccaglio | 5,929.67 mi (9,542.89 km) |
| Napa to Codigoro | 6,030.57 mi (9,705.27 km) |
| Napa to Codogno | 5,944.57 mi (9,566.85 km) |
| Napa to Codroipo | 5,989.10 mi (9,638.53 km) |
| Napa to Cogoleto | 5,956.97 mi (9,586.82 km) |
| Napa to Colle di Val d'Elsa | 6,084.64 mi (9,792.28 km) |
| Napa to Colle Salvetti | 6,054.64 mi (9,744.00 km) |
| Napa to Collecchio | 5,982.16 mi (9,627.36 km) |
| Napa to Colleferro | 6,233.73 mi (10,032.22 km) |
