| Delaware to Cividale del Friuli | 4,563.54 mi (7,344.31 km) |
| Delaware to Civita Castellana | 4,670.13 mi (7,515.84 km) |
| Delaware to Civitanova Marche | 4,685.39 mi (7,540.41 km) |
| Delaware to Civitavecchia | 4,652.15 mi (7,486.91 km) |
| Delaware to Civitella in Val di Chiana | 4,597.40 mi (7,398.80 km) |
| Delaware to Clusone | 4,431.58 mi (7,131.94 km) |
| Delaware to Coccaglio | 4,444.53 mi (7,152.78 km) |
| Delaware to Codigoro | 4,559.30 mi (7,337.49 km) |
| Delaware to Codogno | 4,448.21 mi (7,158.71 km) |
| Delaware to Codroipo | 4,550.75 mi (7,323.73 km) |
| Delaware to Cogoleto | 4,432.64 mi (7,133.65 km) |
| Delaware to Colle di Val d'Elsa | 4,573.74 mi (7,360.72 km) |
| Delaware to Colle Salvetti | 4,538.95 mi (7,304.73 km) |
| Delaware to Collecchio | 4,484.54 mi (7,217.17 km) |
| Delaware to Colleferro | 4,717.95 mi (7,592.80 km) |
