| Union City to Oberkirch | 5,744.95 mi (9,245.60 km) |
| Union City to Obernburg am Main | 5,702.09 mi (9,176.62 km) |
| Union City to Obernkirchen | 5,567.75 mi (8,960.43 km) |
| Union City to Oberschleissheim | 5,855.54 mi (9,423.59 km) |
| Union City to Oberstdorf | 5,867.97 mi (9,443.58 km) |
| Union City to Obertraubling | 5,830.76 mi (9,383.70 km) |
| Union City to Obertshausen | 5,681.33 mi (9,143.22 km) |
| Union City to Oberursel | 5,666.94 mi (9,120.06 km) |
| Union City to Ochsenfurt | 5,737.28 mi (9,233.26 km) |
| Union City to Ochsenhausen | 5,821.93 mi (9,369.50 km) |
| Union City to Ochtrup | 5,520.97 mi (8,885.14 km) |
| Union City to Odenthal | 5,582.36 mi (8,983.94 km) |
| Union City to Oelde | 5,566.42 mi (8,958.29 km) |
| Union City to Oelsnitz | 5,748.49 mi (9,251.30 km) |
| Union City to Oer-Erkenschwick | 5,553.03 mi (8,936.74 km) |
