| Huntsville to Opwijk | 4,437.98 mi (7,142.24 km) |
| Huntsville to Ostend | 4,380.56 mi (7,049.83 km) |
| Huntsville to Oud-Heverlee | 4,460.97 mi (7,179.24 km) |
| Huntsville to Oud-Turnhout | 4,459.65 mi (7,177.11 km) |
| Huntsville to Oudenaarde | 4,418.02 mi (7,110.12 km) |
| Huntsville to Oudenburg | 4,384.92 mi (7,056.85 km) |
| Huntsville to Oupeye | 4,503.32 mi (7,247.39 km) |
| Huntsville to Overijse | 4,457.10 mi (7,173.00 km) |
| Huntsville to Overpelt | 4,479.56 mi (7,209.15 km) |
| Huntsville to Paal | 4,475.09 mi (7,201.96 km) |
| Huntsville to Peer | 4,483.44 mi (7,215.40 km) |
| Huntsville to Pepinster | 4,514.37 mi (7,265.18 km) |
| Huntsville to Peruwelz | 4,426.66 mi (7,124.02 km) |
| Huntsville to Perwez | 4,472.88 mi (7,198.40 km) |
| Huntsville to Philippeville | 4,474.50 mi (7,201.01 km) |
