| Middlesbrough to Nottingham | 112.22 mi (180.60 km) |
| Middlesbrough to Nuneaton | 142.22 mi (228.88 km) |
| Middlesbrough to Oadby | 136.82 mi (220.19 km) |
| Middlesbrough to Oakengates | 139.22 mi (224.05 km) |
| Middlesbrough to Oakham | 133.30 mi (214.53 km) |
| Middlesbrough to Oldbury | 146.68 mi (236.06 km) |
| Middlesbrough to Oldham | 79.78 mi (128.39 km) |
| Middlesbrough to Ollerton | 95.52 mi (153.73 km) |
| Middlesbrough to Olton | 149.64 mi (240.82 km) |
| Middlesbrough to Omagh | 242.35 mi (390.03 km) |
| Middlesbrough to Ormesby | 2.87 mi (4.62 km) |
| Middlesbrough to Ormskirk | 96.71 mi (155.64 km) |
| Middlesbrough to Orpington | 228.12 mi (367.13 km) |
| Middlesbrough to Ossett | 63.51 mi (102.20 km) |
| Middlesbrough to Oswaldtwistle | 74.23 mi (119.47 km) |
