| Flemalle-Haute to Oestrich-Winkel | 119.42 mi (192.19 km) |
| Flemalle-Haute to Offenburg | 184.42 mi (296.80 km) |
| Flemalle-Haute to Oftersheim | 162.66 mi (261.77 km) |
| Flemalle-Haute to Ohrdruf | 231.04 mi (371.82 km) |
| Flemalle-Haute to Ohringen | 204.05 mi (328.39 km) |
| Flemalle-Haute to Olbernhau | 344.78 mi (554.88 km) |
| Flemalle-Haute to Olching | 310.99 mi (500.50 km) |
| Flemalle-Haute to Oldenburg | 211.25 mi (339.97 km) |
| Flemalle-Haute to Oldenburg in Holstein | 342.46 mi (551.14 km) |
| Flemalle-Haute to Olfen | 113.43 mi (182.54 km) |
| Flemalle-Haute to Olpe | 107.40 mi (172.85 km) |
| Flemalle-Haute to Olsberg | 141.21 mi (227.26 km) |
| Flemalle-Haute to Oranienburg | 364.54 mi (586.67 km) |
| Flemalle-Haute to Ortenberg | 158.85 mi (255.64 km) |
| Flemalle-Haute to Oschatz | 336.08 mi (540.86 km) |
