| Holtsville to Opwijk | 3,605.88 mi (5,803.11 km) |
| Holtsville to Ostend | 3,548.24 mi (5,710.34 km) |
| Holtsville to Oud-Heverlee | 3,628.85 mi (5,840.07 km) |
| Holtsville to Oud-Turnhout | 3,629.59 mi (5,841.26 km) |
| Holtsville to Oudenaarde | 3,584.98 mi (5,769.46 km) |
| Holtsville to Oudenburg | 3,552.52 mi (5,717.23 km) |
| Holtsville to Oupeye | 3,671.70 mi (5,909.03 km) |
| Holtsville to Overijse | 3,624.68 mi (5,833.35 km) |
| Holtsville to Overpelt | 3,649.56 mi (5,873.40 km) |
| Holtsville to Paal | 3,644.20 mi (5,864.77 km) |
| Holtsville to Peer | 3,653.17 mi (5,879.21 km) |
| Holtsville to Pepinster | 3,682.42 mi (5,926.29 km) |
| Holtsville to Peruwelz | 3,592.45 mi (5,781.48 km) |
| Holtsville to Perwez | 3,640.16 mi (5,858.28 km) |
| Holtsville to Philippeville | 3,640.09 mi (5,858.16 km) |
