| Iernut to Oerlinghausen | 796.96 mi (1,282.58 km) |
| Iernut to Oestrich-Winkel | 784.49 mi (1,262.51 km) |
| Iernut to Offenburg | 772.49 mi (1,243.20 km) |
| Iernut to Oftersheim | 750.66 mi (1,208.07 km) |
| Iernut to Ohrdruf | 685.11 mi (1,102.58 km) |
| Iernut to Ohringen | 708.00 mi (1,139.42 km) |
| Iernut to Olbernhau | 576.38 mi (927.59 km) |
| Iernut to Olching | 616.05 mi (991.44 km) |
| Iernut to Oldenburg | 848.02 mi (1,364.75 km) |
| Iernut to Oldenburg in Holstein | 797.56 mi (1,283.55 km) |
| Iernut to Olfen | 842.14 mi (1,355.29 km) |
| Iernut to Olpe | 808.90 mi (1,301.80 km) |
| Iernut to Olsberg | 789.17 mi (1,270.05 km) |
| Iernut to Oranienburg | 655.96 mi (1,055.66 km) |
| Iernut to Ortenberg | 744.91 mi (1,198.82 km) |
