| Sint-Pieters-Leeuw to Nottingham | 274.76 mi (442.18 km) |
| Sint-Pieters-Leeuw to Nuneaton | 272.89 mi (439.18 km) |
| Sint-Pieters-Leeuw to Oadby | 260.25 mi (418.83 km) |
| Sint-Pieters-Leeuw to Oakengates | 315.51 mi (507.76 km) |
| Sint-Pieters-Leeuw to Oakham | 249.89 mi (402.16 km) |
| Sint-Pieters-Leeuw to Oldbury | 293.68 mi (472.64 km) |
| Sint-Pieters-Leeuw to Oldham | 330.27 mi (531.52 km) |
| Sint-Pieters-Leeuw to Ollerton | 279.44 mi (449.72 km) |
| Sint-Pieters-Leeuw to Olton | 283.75 mi (456.66 km) |
| Sint-Pieters-Leeuw to Omagh | 549.32 mi (884.04 km) |
| Sint-Pieters-Leeuw to Ormesby | 345.49 mi (556.02 km) |
| Sint-Pieters-Leeuw to Ormskirk | 358.11 mi (576.33 km) |
| Sint-Pieters-Leeuw to Orpington | 184.74 mi (297.31 km) |
| Sint-Pieters-Leeuw to Ossett | 317.51 mi (510.98 km) |
| Sint-Pieters-Leeuw to Oswaldtwistle | 347.23 mi (558.82 km) |
