| Monserrato to Oberkirch | 643.59 mi (1,035.76 km) |
| Monserrato to Obernburg am Main | 731.70 mi (1,177.55 km) |
| Monserrato to Obernkirchen | 899.35 mi (1,447.36 km) |
| Monserrato to Oberschleissheim | 633.34 mi (1,019.26 km) |
| Monserrato to Oberstdorf | 566.61 mi (911.87 km) |
| Monserrato to Obertraubling | 687.63 mi (1,106.63 km) |
| Monserrato to Obertshausen | 747.52 mi (1,203.02 km) |
| Monserrato to Oberursel | 757.32 mi (1,218.78 km) |
| Monserrato to Ochsenfurt | 719.98 mi (1,158.69 km) |
| Monserrato to Ochsenhausen | 610.85 mi (983.07 km) |
| Monserrato to Ochtrup | 900.03 mi (1,448.46 km) |
| Monserrato to Odenthal | 820.07 mi (1,319.78 km) |
| Monserrato to Oelde | 870.75 mi (1,401.33 km) |
| Monserrato to Oelsnitz | 785.40 mi (1,263.98 km) |
| Monserrato to Oer-Erkenschwick | 861.07 mi (1,385.76 km) |
