| Koblenz to Oestrich-Winkel | 30.57 mi (49.19 km) |
| Koblenz to Offenburg | 131.66 mi (211.89 km) |
| Koblenz to Oftersheim | 81.25 mi (130.76 km) |
| Koblenz to Ohrdruf | 141.25 mi (227.32 km) |
| Koblenz to Ohringen | 116.71 mi (187.83 km) |
| Koblenz to Olbernhau | 252.82 mi (406.88 km) |
| Koblenz to Olching | 224.37 mi (361.09 km) |
| Koblenz to Oldenburg | 194.16 mi (312.48 km) |
| Koblenz to Oldenburg in Holstein | 305.48 mi (491.62 km) |
| Koblenz to Olfen | 94.22 mi (151.63 km) |
| Koblenz to Olpe | 46.55 mi (74.92 km) |
| Koblenz to Olsberg | 78.57 mi (126.45 km) |
| Koblenz to Oranienburg | 293.22 mi (471.90 km) |
| Koblenz to Ortenberg | 64.25 mi (103.40 km) |
| Koblenz to Oschatz | 249.00 mi (400.72 km) |
