| Rancho Cucamonga to Cividale del Friuli | 6,108.96 mi (9,831.42 km) |
| Rancho Cucamonga to Civita Castellana | 6,281.23 mi (10,108.66 km) |
| Rancho Cucamonga to Civitanova Marche | 6,269.41 mi (10,089.64 km) |
| Rancho Cucamonga to Civitavecchia | 6,271.77 mi (10,093.44 km) |
| Rancho Cucamonga to Civitella in Val di Chiana | 6,199.19 mi (9,976.64 km) |
| Rancho Cucamonga to Clusone | 6,013.19 mi (9,677.30 km) |
| Rancho Cucamonga to Coccaglio | 6,030.75 mi (9,705.56 km) |
| Rancho Cucamonga to Codigoro | 6,136.58 mi (9,875.87 km) |
| Rancho Cucamonga to Codogno | 6,043.00 mi (9,725.26 km) |
| Rancho Cucamonga to Codroipo | 6,102.70 mi (9,821.34 km) |
| Rancho Cucamonga to Cogoleto | 6,048.32 mi (9,733.84 km) |
| Rancho Cucamonga to Colle di Val d'Elsa | 6,181.23 mi (9,947.74 km) |
| Rancho Cucamonga to Colle Salvetti | 6,149.58 mi (9,896.79 km) |
| Rancho Cucamonga to Collecchio | 6,080.79 mi (9,786.09 km) |
| Rancho Cucamonga to Colleferro | 6,331.05 mi (10,188.84 km) |
