| Upminster to Campo de Criptana | 855.34 mi (1,376.53 km) |
| Upminster to Campos del Puerto | 848.26 mi (1,365.14 km) |
| Upminster to Canals | 871.14 mi (1,401.96 km) |
| Upminster to Candelaria | 1,819.14 mi (2,927.63 km) |
| Upminster to Canet de Mar | 697.24 mi (1,122.10 km) |
| Upminster to Cangas | 769.39 mi (1,238.22 km) |
| Upminster to Cangas de Narcea | 660.07 mi (1,062.27 km) |
| Upminster to Canovellas | 693.32 mi (1,115.79 km) |
| Upminster to Canteras | 965.47 mi (1,553.77 km) |
| Upminster to Cantillana | 1,008.55 mi (1,623.11 km) |
| Upminster to Capdepera | 833.24 mi (1,340.97 km) |
| Upminster to Carballo | 710.68 mi (1,143.72 km) |
| Upminster to Carcagente | 859.73 mi (1,383.61 km) |
| Upminster to Cardedeu | 692.26 mi (1,114.09 km) |
| Upminster to Carlet | 852.68 mi (1,372.26 km) |
