| Idaho Falls to Carpentras | 5,254.30 mi (8,455.99 km) |
| Idaho Falls to Carquefou | 4,874.19 mi (7,844.24 km) |
| Idaho Falls to Carqueiranne | 5,338.02 mi (8,590.72 km) |
| Idaho Falls to Carrieres-sous-Poissy | 4,909.68 mi (7,901.37 km) |
| Idaho Falls to Carrieres-sur-Seine | 4,919.45 mi (7,917.09 km) |
| Idaho Falls to Carros | 5,339.22 mi (8,592.64 km) |
| Idaho Falls to Carvin | 4,862.07 mi (7,824.75 km) |
| Idaho Falls to Castanet-Tolosan | 5,161.70 mi (8,306.96 km) |
| Idaho Falls to Castelginest | 5,150.55 mi (8,289.01 km) |
| Idaho Falls to Castelnau-le-Lez | 5,237.55 mi (8,429.03 km) |
| Idaho Falls to Castelnaudary | 5,187.34 mi (8,348.22 km) |
| Idaho Falls to Castelsarrasin | 5,122.04 mi (8,243.12 km) |
| Idaho Falls to Castres | 5,183.34 mi (8,341.77 km) |
| Idaho Falls to Caudebec-les-Elbeuf | 4,860.93 mi (7,822.91 km) |
| Idaho Falls to Caudry | 4,894.27 mi (7,876.56 km) |
