| Union City to Oerlinghausen | 5,572.59 mi (8,968.22 km) |
| Union City to Oestrich-Winkel | 5,662.47 mi (9,112.87 km) |
| Union City to Offenburg | 5,744.40 mi (9,244.71 km) |
| Union City to Oftersheim | 5,712.88 mi (9,193.99 km) |
| Union City to Ohrdruf | 5,688.90 mi (9,155.40 km) |
| Union City to Ohringen | 5,747.12 mi (9,249.10 km) |
| Union City to Olbernhau | 5,763.26 mi (9,275.08 km) |
| Union City to Olching | 5,851.72 mi (9,417.43 km) |
| Union City to Oldenburg | 5,496.62 mi (8,845.96 km) |
| Union City to Oldenburg in Holstein | 5,498.66 mi (8,849.23 km) |
| Union City to Olfen | 5,552.52 mi (8,935.92 km) |
| Union City to Olpe | 5,602.54 mi (9,016.41 km) |
| Union City to Olsberg | 5,601.59 mi (9,014.89 km) |
| Union City to Oranienburg | 5,641.64 mi (9,079.34 km) |
| Union City to Ortenberg | 5,671.34 mi (9,127.14 km) |
