| Ostermundigen to Oerlinghausen | 350.27 mi (563.71 km) |
| Ostermundigen to Oestrich-Winkel | 211.68 mi (340.67 km) |
| Ostermundigen to Offenburg | 106.47 mi (171.34 km) |
| Ostermundigen to Oftersheim | 174.36 mi (280.61 km) |
| Ostermundigen to Ohrdruf | 305.41 mi (491.52 km) |
| Ostermundigen to Ohringen | 180.75 mi (290.88 km) |
| Ostermundigen to Olbernhau | 369.21 mi (594.19 km) |
| Ostermundigen to Olching | 198.02 mi (318.68 km) |
| Ostermundigen to Oldenburg | 428.81 mi (690.11 km) |
| Ostermundigen to Oldenburg in Holstein | 528.68 mi (850.83 km) |
| Ostermundigen to Olfen | 329.04 mi (529.53 km) |
| Ostermundigen to Olpe | 281.07 mi (452.34 km) |
| Ostermundigen to Olsberg | 306.96 mi (494.01 km) |
| Ostermundigen to Oranienburg | 475.17 mi (764.71 km) |
| Ostermundigen to Ortenberg | 245.59 mi (395.23 km) |
