| Hallein to Oestrich-Winkel | 281.75 mi (453.44 km) |
| Hallein to Offenburg | 244.08 mi (392.80 km) |
| Hallein to Oftersheim | 237.11 mi (381.59 km) |
| Hallein to Ohrdruf | 242.77 mi (390.70 km) |
| Hallein to Ohringen | 195.44 mi (314.52 km) |
| Hallein to Olbernhau | 207.59 mi (334.08 km) |
| Hallein to Olching | 89.69 mi (144.35 km) |
| Hallein to Oldenburg | 434.73 mi (699.63 km) |
| Hallein to Oldenburg in Holstein | 468.14 mi (753.40 km) |
| Hallein to Olfen | 378.21 mi (608.67 km) |
| Hallein to Olpe | 330.65 mi (532.13 km) |
| Hallein to Olsberg | 327.52 mi (527.09 km) |
| Hallein to Oranienburg | 351.59 mi (565.83 km) |
| Hallein to Ortenberg | 260.40 mi (419.07 km) |
| Hallein to Oschatz | 251.06 mi (404.04 km) |
