| Walnut to Oberkirch | 5,832.68 mi (9,386.79 km) |
| Walnut to Obernburg am Main | 5,797.65 mi (9,330.42 km) |
| Walnut to Obernkirchen | 5,672.05 mi (9,128.29 km) |
| Walnut to Oberschleissheim | 5,952.57 mi (9,579.74 km) |
| Walnut to Oberstdorf | 5,958.16 mi (9,588.73 km) |
| Walnut to Obertraubling | 5,932.05 mi (9,546.71 km) |
| Walnut to Obertshausen | 5,776.85 mi (9,296.94 km) |
| Walnut to Oberursel | 5,762.23 mi (9,273.42 km) |
| Walnut to Ochsenfurt | 5,834.82 mi (9,390.23 km) |
| Walnut to Ochsenhausen | 5,913.49 mi (9,516.85 km) |
| Walnut to Ochtrup | 5,619.90 mi (9,044.35 km) |
| Walnut to Odenthal | 5,676.68 mi (9,135.73 km) |
| Walnut to Oelde | 5,666.53 mi (9,119.40 km) |
| Walnut to Oelsnitz | 5,854.74 mi (9,422.30 km) |
| Walnut to Oer-Erkenschwick | 5,650.00 mi (9,092.80 km) |
