| Nea Ionia to Opwijk | 1,307.08 mi (2,103.55 km) |
| Nea Ionia to Ostend | 1,362.36 mi (2,192.50 km) |
| Nea Ionia to Oud-Heverlee | 1,284.61 mi (2,067.38 km) |
| Nea Ionia to Oud-Turnhout | 1,293.73 mi (2,082.07 km) |
| Nea Ionia to Oudenaarde | 1,323.32 mi (2,129.68 km) |
| Nea Ionia to Oudenburg | 1,357.82 mi (2,185.21 km) |
| Nea Ionia to Oupeye | 1,245.31 mi (2,004.13 km) |
| Nea Ionia to Overijse | 1,287.30 mi (2,071.70 km) |
| Nea Ionia to Overpelt | 1,274.74 mi (2,051.49 km) |
| Nea Ionia to Paal | 1,275.51 mi (2,052.74 km) |
| Nea Ionia to Peer | 1,269.88 mi (2,043.68 km) |
| Nea Ionia to Pepinster | 1,233.31 mi (1,984.82 km) |
| Nea Ionia to Peruwelz | 1,311.12 mi (2,110.04 km) |
| Nea Ionia to Perwez | 1,270.86 mi (2,045.26 km) |
| Nea Ionia to Philippeville | 1,263.54 mi (2,033.48 km) |
