| Gelsenkirchen to Nottingham | 362.70 mi (583.70 km) |
| Gelsenkirchen to Nuneaton | 370.65 mi (596.50 km) |
| Gelsenkirchen to Oadby | 355.10 mi (571.48 km) |
| Gelsenkirchen to Oakengates | 413.09 mi (664.80 km) |
| Gelsenkirchen to Oakham | 341.75 mi (549.99 km) |
| Gelsenkirchen to Oldbury | 393.37 mi (633.07 km) |
| Gelsenkirchen to Oldham | 411.60 mi (662.40 km) |
| Gelsenkirchen to Ollerton | 361.60 mi (581.94 km) |
| Gelsenkirchen to Olton | 384.08 mi (618.11 km) |
| Gelsenkirchen to Omagh | 632.85 mi (1,018.47 km) |
| Gelsenkirchen to Ormesby | 402.49 mi (647.75 km) |
| Gelsenkirchen to Ormskirk | 442.47 mi (712.09 km) |
| Gelsenkirchen to Orpington | 301.55 mi (485.29 km) |
| Gelsenkirchen to Ossett | 393.42 mi (633.15 km) |
| Gelsenkirchen to Oswaldtwistle | 426.38 mi (686.19 km) |
