| Haacht to Oestrich-Winkel | 162.48 mi (261.49 km) |
| Haacht to Offenburg | 227.45 mi (366.04 km) |
| Haacht to Oftersheim | 206.91 mi (332.99 km) |
| Haacht to Ohrdruf | 265.73 mi (427.65 km) |
| Haacht to Ohringen | 248.00 mi (399.12 km) |
| Haacht to Olbernhau | 379.96 mi (611.48 km) |
| Haacht to Olching | 355.20 mi (571.64 km) |
| Haacht to Oldenburg | 213.28 mi (343.24 km) |
| Haacht to Oldenburg in Holstein | 348.07 mi (560.16 km) |
| Haacht to Olfen | 129.06 mi (207.70 km) |
| Haacht to Olpe | 139.00 mi (223.70 km) |
| Haacht to Olsberg | 168.61 mi (271.35 km) |
| Haacht to Oranienburg | 386.64 mi (622.24 km) |
| Haacht to Ortenberg | 198.15 mi (318.89 km) |
| Haacht to Oschatz | 367.67 mi (591.70 km) |
