| Merzifon to Oberkirch | 1,435.31 mi (2,309.91 km) |
| Merzifon to Obernburg am Main | 1,410.18 mi (2,269.46 km) |
| Merzifon to Obernkirchen | 1,465.73 mi (2,358.86 km) |
| Merzifon to Oberschleissheim | 1,275.20 mi (2,052.23 km) |
| Merzifon to Oberstdorf | 1,320.74 mi (2,125.52 km) |
| Merzifon to Obertraubling | 1,262.53 mi (2,031.84 km) |
| Merzifon to Obertshausen | 1,427.68 mi (2,297.62 km) |
| Merzifon to Oberursel | 1,441.21 mi (2,319.40 km) |
| Merzifon to Ochsenfurt | 1,366.84 mi (2,199.72 km) |
| Merzifon to Ochsenhausen | 1,344.91 mi (2,164.42 km) |
| Merzifon to Ochtrup | 1,540.59 mi (2,479.33 km) |
| Merzifon to Odenthal | 1,518.76 mi (2,444.21 km) |
| Merzifon to Oelde | 1,493.54 mi (2,403.62 km) |
| Merzifon to Oelsnitz | 1,296.08 mi (2,085.84 km) |
| Merzifon to Oer-Erkenschwick | 1,525.69 mi (2,455.37 km) |
