| Siniscola to Nottingham | 995.06 mi (1,601.39 km) |
| Siniscola to Nuneaton | 978.83 mi (1,575.27 km) |
| Siniscola to Oadby | 973.30 mi (1,566.37 km) |
| Siniscola to Oakengates | 1,013.60 mi (1,631.23 km) |
| Siniscola to Oakham | 969.08 mi (1,559.58 km) |
| Siniscola to Oldbury | 991.93 mi (1,596.36 km) |
| Siniscola to Oldham | 1,051.55 mi (1,692.31 km) |
| Siniscola to Ollerton | 1,006.02 mi (1,619.03 km) |
| Siniscola to Olton | 982.80 mi (1,581.67 km) |
| Siniscola to Omagh | 1,244.03 mi (2,002.07 km) |
| Siniscola to Ormesby | 1,087.78 mi (1,750.61 km) |
| Siniscola to Ormskirk | 1,071.91 mi (1,725.07 km) |
| Siniscola to Orpington | 875.38 mi (1,408.79 km) |
| Siniscola to Ossett | 1,046.40 mi (1,684.02 km) |
| Siniscola to Oswaldtwistle | 1,069.31 mi (1,720.88 km) |
