| Sussex to Opwijk | 4,091.43 mi (6,584.51 km) |
| Sussex to Ostend | 4,035.31 mi (6,494.21 km) |
| Sussex to Oud-Heverlee | 4,114.17 mi (6,621.11 km) |
| Sussex to Oud-Turnhout | 4,107.97 mi (6,611.14 km) |
| Sussex to Oudenaarde | 4,074.07 mi (6,556.59 km) |
| Sussex to Oudenburg | 4,039.82 mi (6,501.46 km) |
| Sussex to Oupeye | 4,154.77 mi (6,686.45 km) |
| Sussex to Overijse | 4,111.09 mi (6,616.15 km) |
| Sussex to Overpelt | 4,127.49 mi (6,642.56 km) |
| Sussex to Paal | 4,125.16 mi (6,638.81 km) |
| Sussex to Peer | 4,131.96 mi (6,649.75 km) |
| Sussex to Pepinster | 4,166.47 mi (6,705.29 km) |
| Sussex to Peruwelz | 4,085.57 mi (6,575.08 km) |
| Sussex to Perwez | 4,127.39 mi (6,642.38 km) |
| Sussex to Philippeville | 4,133.29 mi (6,651.88 km) |
