| Helena to Carpentras | 5,092.94 mi (8,196.29 km) |
| Helena to Carquefou | 4,715.85 mi (7,589.43 km) |
| Helena to Carqueiranne | 5,176.80 mi (8,331.25 km) |
| Helena to Carrieres-sous-Poissy | 4,743.89 mi (7,634.55 km) |
| Helena to Carrieres-sur-Seine | 4,753.42 mi (7,649.90 km) |
| Helena to Carros | 5,175.32 mi (8,328.87 km) |
| Helena to Carvin | 4,692.55 mi (7,551.92 km) |
| Helena to Castanet-Tolosan | 5,006.33 mi (8,056.91 km) |
| Helena to Castelginest | 4,994.94 mi (8,038.58 km) |
| Helena to Castelnau-le-Lez | 5,078.51 mi (8,173.08 km) |
| Helena to Castelnaudary | 5,031.67 mi (8,097.68 km) |
| Helena to Castelsarrasin | 4,966.26 mi (7,992.43 km) |
| Helena to Castres | 5,026.72 mi (8,089.73 km) |
| Helena to Caudebec-les-Elbeuf | 4,695.78 mi (7,557.13 km) |
| Helena to Caudry | 4,724.84 mi (7,603.89 km) |
