| Ilmajoki to Oignies | 1,119.22 mi (1,801.20 km) |
| Ilmajoki to Oissel | 1,230.81 mi (1,980.79 km) |
| Ilmajoki to Olivet | 1,298.28 mi (2,089.38 km) |
| Ilmajoki to Ollioules | 1,512.12 mi (2,433.53 km) |
| Ilmajoki to Olonne-sur-Mer | 1,465.49 mi (2,358.47 km) |
| Ilmajoki to Oloron-Sainte-Marie | 1,639.82 mi (2,639.04 km) |
| Ilmajoki to Onet Village | 1,497.29 mi (2,409.66 km) |
| Ilmajoki to Onnaing | 1,109.44 mi (1,785.47 km) |
| Ilmajoki to Orange | 1,467.19 mi (2,361.21 km) |
| Ilmajoki to Orchies | 1,112.85 mi (1,790.96 km) |
| Ilmajoki to Orleans | 1,295.78 mi (2,085.35 km) |
| Ilmajoki to Orly | 1,234.43 mi (1,986.62 km) |
| Ilmajoki to Ormesson-sur-Marne | 1,228.53 mi (1,977.13 km) |
| Ilmajoki to Orsay | 1,241.97 mi (1,998.76 km) |
| Ilmajoki to Orthez | 1,625.43 mi (2,615.87 km) |
