| Huercal-Overa to Nottingham | 1,076.44 mi (1,732.37 km) |
| Huercal-Overa to Nuneaton | 1,046.29 mi (1,683.85 km) |
| Huercal-Overa to Oadby | 1,052.10 mi (1,693.19 km) |
| Huercal-Overa to Oakengates | 1,058.23 mi (1,703.06 km) |
| Huercal-Overa to Oakham | 1,057.83 mi (1,702.41 km) |
| Huercal-Overa to Oldbury | 1,044.82 mi (1,681.47 km) |
| Huercal-Overa to Oldham | 1,116.66 mi (1,797.09 km) |
| Huercal-Overa to Ollerton | 1,093.71 mi (1,760.15 km) |
| Huercal-Overa to Olton | 1,040.18 mi (1,674.00 km) |
| Huercal-Overa to Omagh | 1,215.49 mi (1,956.14 km) |
| Huercal-Overa to Ormesby | 1,186.58 mi (1,909.62 km) |
| Huercal-Overa to Ormskirk | 1,119.08 mi (1,800.98 km) |
| Huercal-Overa to Orpington | 971.76 mi (1,563.90 km) |
| Huercal-Overa to Ossett | 1,126.12 mi (1,812.31 km) |
| Huercal-Overa to Oswaldtwistle | 1,130.56 mi (1,819.46 km) |
