| Idaho Falls to Chivasso | 5,286.72 mi (8,508.15 km) |
| Idaho Falls to Ciampino | 5,617.15 mi (9,039.93 km) |
| Idaho Falls to Cicciano | 5,723.09 mi (9,210.43 km) |
| Idaho Falls to Cingoli | 5,549.65 mi (8,931.31 km) |
| Idaho Falls to Cinisello Balsamo | 5,309.12 mi (8,544.20 km) |
| Idaho Falls to Cinisi | 5,833.88 mi (9,388.72 km) |
| Idaho Falls to Cirie | 5,275.34 mi (8,489.84 km) |
| Idaho Falls to Ciro Marina | 5,892.19 mi (9,482.56 km) |
| Idaho Falls to Cislago | 5,296.09 mi (8,523.23 km) |
| Idaho Falls to Cisterna di Latina | 5,635.79 mi (9,069.92 km) |
| Idaho Falls to Cisternino | 5,823.46 mi (9,371.95 km) |
| Idaho Falls to Citta di Castello | 5,514.94 mi (8,875.43 km) |
| Idaho Falls to Citta Sant'Angelo | 5,621.93 mi (9,047.62 km) |
| Idaho Falls to Cittadella | 5,381.50 mi (8,660.69 km) |
| Idaho Falls to Cittanova | 5,918.19 mi (9,524.41 km) |
