| Ilion to Oerlinghausen | 1,205.83 mi (1,940.60 km) |
| Ilion to Oestrich-Winkel | 1,132.21 mi (1,822.12 km) |
| Ilion to Offenburg | 1,068.18 mi (1,719.08 km) |
| Ilion to Oftersheim | 1,084.02 mi (1,744.57 km) |
| Ilion to Ohrdruf | 1,087.83 mi (1,750.69 km) |
| Ilion to Ohringen | 1,045.29 mi (1,682.23 km) |
| Ilion to Olbernhau | 1,009.85 mi (1,625.19 km) |
| Ilion to Olching | 937.59 mi (1,508.91 km) |
| Ilion to Oldenburg | 1,278.86 mi (2,058.13 km) |
| Ilion to Oldenburg in Holstein | 1,275.82 mi (2,053.23 km) |
| Ilion to Olfen | 1,232.01 mi (1,982.73 km) |
| Ilion to Olpe | 1,184.67 mi (1,906.55 km) |
| Ilion to Olsberg | 1,180.53 mi (1,899.88 km) |
| Ilion to Oranienburg | 1,134.06 mi (1,825.10 km) |
| Ilion to Ortenberg | 1,114.45 mi (1,793.53 km) |
