| Flowing Wells to Opwijk | 5,468.15 mi (8,800.14 km) |
| Flowing Wells to Ostend | 5,414.05 mi (8,713.07 km) |
| Flowing Wells to Oud-Heverlee | 5,490.32 mi (8,835.82 km) |
| Flowing Wells to Oud-Turnhout | 5,479.82 mi (8,818.91 km) |
| Flowing Wells to Oudenaarde | 5,453.34 mi (8,776.31 km) |
| Flowing Wells to Oudenburg | 5,418.61 mi (8,720.40 km) |
| Flowing Wells to Oupeye | 5,528.72 mi (8,897.61 km) |
| Flowing Wells to Overijse | 5,487.99 mi (8,832.06 km) |
| Flowing Wells to Overpelt | 5,498.67 mi (8,849.25 km) |
| Flowing Wells to Paal | 5,498.34 mi (8,848.72 km) |
| Flowing Wells to Peer | 5,503.60 mi (8,857.19 km) |
| Flowing Wells to Pepinster | 5,540.83 mi (8,917.11 km) |
| Flowing Wells to Peruwelz | 5,467.10 mi (8,798.44 km) |
| Flowing Wells to Perwez | 5,504.49 mi (8,858.63 km) |
| Flowing Wells to Philippeville | 5,514.01 mi (8,873.94 km) |
