| Keizer to Oerlinghausen | 5,147.48 mi (8,284.07 km) |
| Keizer to Oestrich-Winkel | 5,245.14 mi (8,441.24 km) |
| Keizer to Offenburg | 5,332.06 mi (8,581.11 km) |
| Keizer to Oftersheim | 5,295.85 mi (8,522.84 km) |
| Keizer to Ohrdruf | 5,261.66 mi (8,467.83 km) |
| Keizer to Ohringen | 5,328.01 mi (8,574.60 km) |
| Keizer to Olbernhau | 5,329.59 mi (8,577.15 km) |
| Keizer to Olching | 5,430.31 mi (8,739.24 km) |
| Keizer to Oldenburg | 5,069.14 mi (8,157.99 km) |
| Keizer to Oldenburg in Holstein | 5,061.41 mi (8,145.56 km) |
| Keizer to Olfen | 5,131.53 mi (8,258.40 km) |
| Keizer to Olpe | 5,182.52 mi (8,340.46 km) |
| Keizer to Olsberg | 5,178.81 mi (8,334.49 km) |
| Keizer to Oranienburg | 5,202.84 mi (8,373.16 km) |
| Keizer to Ortenberg | 5,250.01 mi (8,449.07 km) |
