| Idaho Falls to Opwijk | 4,875.72 mi (7,846.71 km) |
| Idaho Falls to Ostend | 4,824.71 mi (7,764.62 km) |
| Idaho Falls to Oud-Heverlee | 4,896.90 mi (7,880.80 km) |
| Idaho Falls to Oud-Turnhout | 4,882.01 mi (7,856.83 km) |
| Idaho Falls to Oudenaarde | 4,863.94 mi (7,827.76 km) |
| Idaho Falls to Oudenburg | 4,829.25 mi (7,771.93 km) |
| Idaho Falls to Oupeye | 4,932.31 mi (7,937.79 km) |
| Idaho Falls to Overijse | 4,895.41 mi (7,878.41 km) |
| Idaho Falls to Overpelt | 4,899.85 mi (7,885.55 km) |
| Idaho Falls to Paal | 4,901.61 mi (7,888.38 km) |
| Idaho Falls to Peer | 4,905.18 mi (7,894.13 km) |
| Idaho Falls to Pepinster | 4,944.66 mi (7,957.67 km) |
| Idaho Falls to Peruwelz | 4,880.02 mi (7,853.63 km) |
| Idaho Falls to Perwez | 4,911.87 mi (7,904.90 km) |
| Idaho Falls to Philippeville | 4,925.24 mi (7,926.41 km) |
