| Helena to Celano | 5,460.55 mi (8,787.90 km) |
| Helena to Cento | 5,245.39 mi (8,441.64 km) |
| Helena to Cepagatti | 5,459.38 mi (8,786.03 km) |
| Helena to Ceprano | 5,489.83 mi (8,835.02 km) |
| Helena to Cercola | 5,553.25 mi (8,937.10 km) |
| Helena to Cerea | 5,217.49 mi (8,396.74 km) |
| Helena to Cerese | 5,212.28 mi (8,388.35 km) |
| Helena to Cerignola | 5,575.10 mi (8,972.26 km) |
| Helena to Cermenate | 5,127.62 mi (8,252.10 km) |
| Helena to Cernusco sul Naviglio | 5,145.02 mi (8,280.12 km) |
| Helena to Cerreto Guidi | 5,287.45 mi (8,509.33 km) |
| Helena to Cerro Maggiore | 5,129.14 mi (8,254.56 km) |
| Helena to Certaldo | 5,304.31 mi (8,536.46 km) |
| Helena to Cerveteri | 5,422.43 mi (8,726.56 km) |
| Helena to Cervia | 5,302.98 mi (8,534.32 km) |
