| Montfoort to Oberkirch | 279.53 mi (449.85 km) |
| Montfoort to Obernburg am Main | 237.86 mi (382.80 km) |
| Montfoort to Obernkirchen | 177.27 mi (285.29 km) |
| Montfoort to Oberschleissheim | 393.10 mi (632.64 km) |
| Montfoort to Oberstdorf | 399.07 mi (642.24 km) |
| Montfoort to Obertraubling | 381.79 mi (614.44 km) |
| Montfoort to Obertshausen | 217.24 mi (349.62 km) |
| Montfoort to Oberursel | 202.48 mi (325.86 km) |
| Montfoort to Ochsenfurt | 277.95 mi (447.32 km) |
| Montfoort to Ochsenhausen | 352.93 mi (567.99 km) |
| Montfoort to Ochtrup | 95.63 mi (153.90 km) |
| Montfoort to Odenthal | 116.63 mi (187.69 km) |
| Montfoort to Oelde | 137.11 mi (220.65 km) |
| Montfoort to Oelsnitz | 331.81 mi (534.00 km) |
| Montfoort to Oer-Erkenschwick | 102.16 mi (164.42 km) |
