| Walnut Park to Opwijk | 5,605.88 mi (9,021.78 km) |
| Walnut Park to Ostend | 5,554.17 mi (8,938.58 km) |
| Walnut Park to Oud-Heverlee | 5,627.28 mi (9,056.23 km) |
| Walnut Park to Oud-Turnhout | 5,613.20 mi (9,033.57 km) |
| Walnut Park to Oudenaarde | 5,593.47 mi (9,001.82 km) |
| Walnut Park to Oudenburg | 5,558.72 mi (8,945.90 km) |
| Walnut Park to Oupeye | 5,663.31 mi (9,114.22 km) |
| Walnut Park to Overijse | 5,625.63 mi (9,053.57 km) |
| Walnut Park to Overpelt | 5,631.25 mi (9,062.62 km) |
| Walnut Park to Paal | 5,632.62 mi (9,064.83 km) |
| Walnut Park to Peer | 5,636.52 mi (9,071.10 km) |
| Walnut Park to Pepinster | 5,675.63 mi (9,134.05 km) |
| Walnut Park to Peruwelz | 5,609.09 mi (9,026.96 km) |
| Walnut Park to Perwez | 5,642.12 mi (9,080.11 km) |
| Walnut Park to Philippeville | 5,654.73 mi (9,100.41 km) |
