| Perry Hall to Oberkirch | 4,034.09 mi (6,492.24 km) |
| Perry Hall to Obernburg am Main | 4,038.60 mi (6,499.50 km) |
| Perry Hall to Obernkirchen | 3,967.84 mi (6,385.62 km) |
| Perry Hall to Oberschleissheim | 4,185.85 mi (6,736.48 km) |
| Perry Hall to Oberstdorf | 4,159.56 mi (6,694.17 km) |
| Perry Hall to Obertraubling | 4,187.28 mi (6,738.78 km) |
| Perry Hall to Obertshausen | 4,019.54 mi (6,468.83 km) |
| Perry Hall to Oberursel | 4,005.27 mi (6,445.86 km) |
| Perry Hall to Ochsenfurt | 4,081.52 mi (6,568.58 km) |
| Perry Hall to Ochsenhausen | 4,125.08 mi (6,638.67 km) |
| Perry Hall to Ochtrup | 3,894.60 mi (6,267.76 km) |
| Perry Hall to Odenthal | 3,923.43 mi (6,314.15 km) |
| Perry Hall to Oelde | 3,942.24 mi (6,344.42 km) |
| Perry Hall to Oelsnitz | 4,141.47 mi (6,665.06 km) |
| Perry Hall to Oer-Erkenschwick | 3,912.14 mi (6,295.98 km) |
