| Ionia to Norwich | 3,817.79 mi (6,144.14 km) |
| Ionia to Nottingham | 3,716.43 mi (5,981.01 km) |
| Ionia to Nuneaton | 3,717.31 mi (5,982.44 km) |
| Ionia to Oadby | 3,729.85 mi (6,002.61 km) |
| Ionia to Oakengates | 3,674.95 mi (5,914.27 km) |
| Ionia to Oakham | 3,740.61 mi (6,019.92 km) |
| Ionia to Oldbury | 3,697.07 mi (5,949.85 km) |
| Ionia to Oldham | 3,662.90 mi (5,894.86 km) |
| Ionia to Ollerton | 3,713.93 mi (5,977.00 km) |
| Ionia to Olton | 3,707.05 mi (5,965.92 km) |
| Ionia to Omagh | 3,441.56 mi (5,538.65 km) |
| Ionia to Ormesby | 3,668.52 mi (5,903.91 km) |
| Ionia to Ormskirk | 3,633.48 mi (5,847.52 km) |
| Ionia to Orpington | 3,812.47 mi (6,135.58 km) |
| Ionia to Ossett | 3,678.96 mi (5,920.71 km) |
