| Ulus to Oerlinghausen | 1,332.59 mi (2,144.60 km) |
| Ulus to Oestrich-Winkel | 1,313.51 mi (2,113.90 km) |
| Ulus to Offenburg | 1,289.73 mi (2,075.63 km) |
| Ulus to Oftersheim | 1,276.23 mi (2,053.89 km) |
| Ulus to Ohrdruf | 1,219.83 mi (1,963.12 km) |
| Ulus to Ohringen | 1,233.32 mi (1,984.84 km) |
| Ulus to Olbernhau | 1,112.04 mi (1,789.66 km) |
| Ulus to Olching | 1,134.52 mi (1,825.84 km) |
| Ulus to Oldenburg | 1,383.32 mi (2,226.25 km) |
| Ulus to Oldenburg in Holstein | 1,326.45 mi (2,134.71 km) |
| Ulus to Olfen | 1,377.04 mi (2,216.13 km) |
| Ulus to Olpe | 1,342.28 mi (2,160.19 km) |
| Ulus to Olsberg | 1,323.84 mi (2,130.51 km) |
| Ulus to Oranienburg | 1,187.44 mi (1,911.00 km) |
| Ulus to Ortenberg | 1,276.71 mi (2,054.66 km) |
