| Topeka to Oberkirch | 4,805.32 mi (7,733.41 km) |
| Topeka to Obernburg am Main | 4,790.02 mi (7,708.80 km) |
| Topeka to Obernkirchen | 4,690.09 mi (7,547.97 km) |
| Topeka to Oberschleissheim | 4,944.06 mi (7,956.70 km) |
| Topeka to Oberstdorf | 4,933.15 mi (7,939.14 km) |
| Topeka to Obertraubling | 4,934.59 mi (7,941.45 km) |
| Topeka to Obertshausen | 4,769.70 mi (7,676.09 km) |
| Topeka to Oberursel | 4,754.96 mi (7,652.37 km) |
| Topeka to Ochsenfurt | 4,830.93 mi (7,774.63 km) |
| Topeka to Ochsenhausen | 4,892.93 mi (7,874.41 km) |
| Topeka to Ochtrup | 4,625.89 mi (7,444.66 km) |
| Topeka to Odenthal | 4,669.53 mi (7,514.89 km) |
| Topeka to Oelde | 4,674.08 mi (7,522.20 km) |
| Topeka to Oelsnitz | 4,872.11 mi (7,840.90 km) |
| Topeka to Oer-Erkenschwick | 4,650.20 mi (7,483.77 km) |
