| Upminster to Cividale del Friuli | 706.66 mi (1,137.27 km) |
| Upminster to Civita Castellana | 857.12 mi (1,379.39 km) |
| Upminster to Civitanova Marche | 847.58 mi (1,364.04 km) |
| Upminster to Civitavecchia | 849.33 mi (1,366.87 km) |
| Upminster to Civitella in Val di Chiana | 774.66 mi (1,246.70 km) |
| Upminster to Clusone | 589.93 mi (949.41 km) |
| Upminster to Coccaglio | 606.74 mi (976.46 km) |
| Upminster to Codigoro | 715.66 mi (1,151.75 km) |
| Upminster to Codogno | 618.45 mi (995.30 km) |
| Upminster to Codroipo | 695.23 mi (1,118.87 km) |
| Upminster to Cogoleto | 628.40 mi (1,011.32 km) |
| Upminster to Colle di Val d'Elsa | 757.21 mi (1,218.61 km) |
| Upminster to Colle Salvetti | 726.35 mi (1,168.95 km) |
| Upminster to Collecchio | 656.24 mi (1,056.12 km) |
| Upminster to Colleferro | 906.92 mi (1,459.55 km) |
