| Idaho Falls to Karditsa | 6,031.48 mi (9,706.73 km) |
| Idaho Falls to Kastoria | 5,945.79 mi (9,568.83 km) |
| Idaho Falls to Katerini | 5,994.49 mi (9,647.20 km) |
| Idaho Falls to Keratsini | 6,161.62 mi (9,916.17 km) |
| Idaho Falls to Kerkyra | 5,959.85 mi (9,591.46 km) |
| Idaho Falls to Kiato | 6,134.90 mi (9,873.16 km) |
| Idaho Falls to Kifisia | 6,160.19 mi (9,913.86 km) |
| Idaho Falls to Kilkis | 5,962.03 mi (9,594.95 km) |
| Idaho Falls to Komotini | 6,021.92 mi (9,691.35 km) |
| Idaho Falls to Korinthos | 6,144.12 mi (9,888.01 km) |
| Idaho Falls to Koropi | 6,172.67 mi (9,933.96 km) |
| Idaho Falls to Korydallos | 6,161.55 mi (9,916.06 km) |
| Idaho Falls to Kos | 6,326.20 mi (10,181.04 km) |
| Idaho Falls to Kozani | 5,972.84 mi (9,612.35 km) |
| Idaho Falls to Lagos | 6,013.87 mi (9,678.38 km) |
