| Monzon to Oberkirch | 596.83 mi (960.50 km) |
| Monzon to Obernburg am Main | 695.84 mi (1,119.84 km) |
| Monzon to Obernkirchen | 828.30 mi (1,333.02 km) |
| Monzon to Oberschleissheim | 705.83 mi (1,135.92 km) |
| Monzon to Oberstdorf | 623.85 mi (1,004.00 km) |
| Monzon to Obertraubling | 756.61 mi (1,217.65 km) |
| Monzon to Obertshausen | 698.85 mi (1,124.69 km) |
| Monzon to Oberursel | 699.07 mi (1,125.05 km) |
| Monzon to Ochsenfurt | 714.68 mi (1,150.17 km) |
| Monzon to Ochsenhausen | 638.34 mi (1,027.31 km) |
| Monzon to Ochtrup | 783.09 mi (1,260.26 km) |
| Monzon to Odenthal | 710.59 mi (1,143.58 km) |
| Monzon to Oelde | 780.88 mi (1,256.71 km) |
| Monzon to Oelsnitz | 818.99 mi (1,318.04 km) |
| Monzon to Oer-Erkenschwick | 750.02 mi (1,207.04 km) |
