| Defiance to Opwijk | 4,032.80 mi (6,490.17 km) |
| Defiance to Ostend | 3,975.91 mi (6,398.61 km) |
| Defiance to Oud-Heverlee | 4,055.72 mi (6,527.05 km) |
| Defiance to Oud-Turnhout | 4,051.92 mi (6,520.94 km) |
| Defiance to Oudenaarde | 4,014.13 mi (6,460.11 km) |
| Defiance to Oudenburg | 3,980.36 mi (6,405.76 km) |
| Defiance to Oupeye | 4,097.28 mi (6,593.93 km) |
| Defiance to Overijse | 4,052.24 mi (6,521.45 km) |
| Defiance to Overpelt | 4,071.68 mi (6,552.74 km) |
| Defiance to Paal | 4,068.28 mi (6,547.27 km) |
| Defiance to Peer | 4,075.87 mi (6,559.48 km) |
| Defiance to Pepinster | 4,108.69 mi (6,612.29 km) |
| Defiance to Peruwelz | 4,024.25 mi (6,476.40 km) |
| Defiance to Perwez | 4,068.32 mi (6,547.33 km) |
| Defiance to Philippeville | 4,072.14 mi (6,553.48 km) |
