| Idaho Falls to Carmignano | 5,457.84 mi (8,783.54 km) |
| Idaho Falls to Carovigno | 5,832.23 mi (9,386.06 km) |
| Idaho Falls to Carpenedolo | 5,356.23 mi (8,620.02 km) |
| Idaho Falls to Carpi | 5,401.39 mi (8,692.69 km) |
| Idaho Falls to Carrara | 5,415.23 mi (8,714.97 km) |
| Idaho Falls to Carugate | 5,312.71 mi (8,549.98 km) |
| Idaho Falls to Casal di Principe | 5,708.01 mi (9,186.16 km) |
| Idaho Falls to Casale Monferrato | 5,307.65 mi (8,541.84 km) |
| Idaho Falls to Casale sul Sile | 5,400.55 mi (8,691.35 km) |
| Idaho Falls to Casalecchio di Reno | 5,429.85 mi (8,738.49 km) |
| Idaho Falls to Casalgrande | 5,407.61 mi (8,702.71 km) |
| Idaho Falls to Casalmaggiore | 5,376.14 mi (8,652.05 km) |
| Idaho Falls to Casalnuovo di Napoli | 5,720.26 mi (9,205.87 km) |
| Idaho Falls to Casalpusterlengo | 5,342.34 mi (8,597.67 km) |
| Idaho Falls to Casaluce | 5,711.00 mi (9,190.96 km) |
