| Ilmajoki to Opwijk | 1,061.94 mi (1,709.02 km) |
| Ilmajoki to Ostend | 1,077.79 mi (1,734.54 km) |
| Ilmajoki to Oud-Heverlee | 1,058.33 mi (1,703.22 km) |
| Ilmajoki to Oud-Turnhout | 1,022.78 mi (1,646.01 km) |
| Ilmajoki to Oudenaarde | 1,082.62 mi (1,742.31 km) |
| Ilmajoki to Oudenburg | 1,078.20 mi (1,735.20 km) |
| Ilmajoki to Oupeye | 1,043.38 mi (1,679.15 km) |
| Ilmajoki to Overijse | 1,064.36 mi (1,712.92 km) |
| Ilmajoki to Overpelt | 1,018.55 mi (1,639.20 km) |
| Ilmajoki to Paal | 1,034.56 mi (1,664.96 km) |
| Ilmajoki to Peer | 1,022.62 mi (1,645.75 km) |
| Ilmajoki to Pepinster | 1,047.93 mi (1,686.48 km) |
| Ilmajoki to Peruwelz | 1,102.30 mi (1,773.98 km) |
| Ilmajoki to Perwez | 1,067.16 mi (1,717.43 km) |
| Ilmajoki to Philippeville | 1,098.25 mi (1,767.46 km) |
