| Overijse to Oestrich-Winkel | 161.99 mi (260.70 km) |
| Overijse to Offenburg | 220.81 mi (355.36 km) |
| Overijse to Oftersheim | 204.41 mi (328.96 km) |
| Overijse to Ohrdruf | 270.63 mi (435.54 km) |
| Overijse to Ohringen | 246.18 mi (396.20 km) |
| Overijse to Olbernhau | 384.76 mi (619.21 km) |
| Overijse to Olching | 352.70 mi (567.62 km) |
| Overijse to Oldenburg | 226.12 mi (363.90 km) |
| Overijse to Oldenburg in Holstein | 360.64 mi (580.39 km) |
| Overijse to Olfen | 139.09 mi (223.85 km) |
| Overijse to Olpe | 144.69 mi (232.85 km) |
| Overijse to Olsberg | 175.90 mi (283.08 km) |
| Overijse to Oranienburg | 395.97 mi (637.26 km) |
| Overijse to Ortenberg | 200.60 mi (322.83 km) |
| Overijse to Oschatz | 373.97 mi (601.84 km) |
