| Upminster to Caltagirone | 1,209.59 mi (1,946.64 km) |
| Upminster to Caltanissetta | 1,182.00 mi (1,902.25 km) |
| Upminster to Calvisano | 629.75 mi (1,013.48 km) |
| Upminster to Calvizzano | 989.39 mi (1,592.28 km) |
| Upminster to Camaiore | 702.53 mi (1,130.61 km) |
| Upminster to Cameri | 567.40 mi (913.14 km) |
| Upminster to Camisano Vicentino | 668.95 mi (1,076.58 km) |
| Upminster to Campagna | 1,031.49 mi (1,660.03 km) |
| Upminster to Campagnano di Roma | 865.23 mi (1,392.46 km) |
| Upminster to Campi Bisenzio | 734.77 mi (1,182.50 km) |
| Upminster to Campi Salentina | 1,144.13 mi (1,841.30 km) |
| Upminster to Campiglia Marittima | 759.94 mi (1,223.01 km) |
| Upminster to Campobasso | 968.95 mi (1,559.38 km) |
| Upminster to Campobello di Licata | 1,192.38 mi (1,918.95 km) |
| Upminster to Campobello di Mazara | 1,138.18 mi (1,831.72 km) |
