| Frederiksvaerk to Oestrich-Winkel | 444.64 mi (715.59 km) |
| Frederiksvaerk to Offenburg | 546.03 mi (878.75 km) |
| Frederiksvaerk to Oftersheim | 477.74 mi (768.85 km) |
| Frederiksvaerk to Ohrdruf | 358.94 mi (577.67 km) |
| Frederiksvaerk to Ohringen | 479.24 mi (771.26 km) |
| Frederiksvaerk to Olbernhau | 370.19 mi (595.76 km) |
| Frederiksvaerk to Olching | 537.44 mi (864.93 km) |
| Frederiksvaerk to Oldenburg | 247.42 mi (398.19 km) |
| Frederiksvaerk to Oldenburg in Holstein | 123.55 mi (198.83 km) |
| Frederiksvaerk to Olfen | 348.98 mi (561.63 km) |
| Frederiksvaerk to Olpe | 382.64 mi (615.81 km) |
| Frederiksvaerk to Olsberg | 350.15 mi (563.51 km) |
| Frederiksvaerk to Oranienburg | 227.31 mi (365.82 km) |
| Frederiksvaerk to Ortenberg | 406.53 mi (654.24 km) |
| Frederiksvaerk to Oschatz | 325.49 mi (523.82 km) |
