| Merriam to Oberkirch | 4,769.05 mi (7,675.05 km) |
| Merriam to Obernburg am Main | 4,754.86 mi (7,652.21 km) |
| Merriam to Obernkirchen | 4,656.44 mi (7,493.82 km) |
| Merriam to Oberschleissheim | 4,908.67 mi (7,899.74 km) |
| Merriam to Oberstdorf | 4,896.88 mi (7,880.76 km) |
| Merriam to Obertraubling | 4,899.80 mi (7,885.47 km) |
| Merriam to Obertshausen | 4,734.58 mi (7,619.58 km) |
| Merriam to Oberursel | 4,719.86 mi (7,595.87 km) |
| Merriam to Ochsenfurt | 4,795.92 mi (7,718.29 km) |
| Merriam to Ochsenhausen | 4,856.94 mi (7,816.50 km) |
| Merriam to Ochtrup | 4,591.68 mi (7,389.59 km) |
| Merriam to Odenthal | 4,634.54 mi (7,458.57 km) |
| Merriam to Oelde | 4,639.88 mi (7,467.17 km) |
| Merriam to Oelsnitz | 4,838.20 mi (7,786.33 km) |
| Merriam to Oer-Erkenschwick | 4,615.63 mi (7,428.14 km) |
