| Helena to Cervignano del Friuli | 5,242.68 mi (8,437.28 km) |
| Helena to Cesa | 5,544.11 mi (8,922.39 km) |
| Helena to Cesano Maderno | 5,133.25 mi (8,261.16 km) |
| Helena to Cesena | 5,306.48 mi (8,539.96 km) |
| Helena to Cesenatico | 5,307.39 mi (8,541.41 km) |
| Helena to Cetraro | 5,678.65 mi (9,138.91 km) |
| Helena to Cherasco | 5,148.40 mi (8,285.55 km) |
| Helena to Chiampo | 5,199.95 mi (8,368.51 km) |
| Helena to Chiaravalle | 5,368.23 mi (8,639.33 km) |
| Helena to Chiari | 5,161.02 mi (8,305.86 km) |
| Helena to Chiavari | 5,210.87 mi (8,386.09 km) |
| Helena to Chieri | 5,127.31 mi (8,251.60 km) |
| Helena to Chieti | 5,463.22 mi (8,792.20 km) |
| Helena to Chioggia | 5,246.87 mi (8,444.03 km) |
| Helena to Chiusi | 5,360.86 mi (8,627.47 km) |
