| Fall River to Opwijk | 3,488.12 mi (5,613.59 km) |
| Fall River to Ostend | 3,430.47 mi (5,520.81 km) |
| Fall River to Oud-Heverlee | 3,511.09 mi (5,650.55 km) |
| Fall River to Oud-Turnhout | 3,512.00 mi (5,652.01 km) |
| Fall River to Oudenaarde | 3,467.14 mi (5,579.82 km) |
| Fall River to Oudenburg | 3,434.74 mi (5,527.69 km) |
| Fall River to Oupeye | 3,553.97 mi (5,719.56 km) |
| Fall River to Overijse | 3,506.89 mi (5,643.79 km) |
| Fall River to Overpelt | 3,531.96 mi (5,684.15 km) |
| Fall River to Paal | 3,526.53 mi (5,675.40 km) |
| Fall River to Peer | 3,535.55 mi (5,689.92 km) |
| Fall River to Pepinster | 3,564.66 mi (5,736.77 km) |
| Fall River to Peruwelz | 3,474.52 mi (5,591.70 km) |
| Fall River to Perwez | 3,522.35 mi (5,668.67 km) |
| Fall River to Philippeville | 3,522.15 mi (5,668.35 km) |
