| Jefferson Hills to Oberkirch | 4,136.10 mi (6,656.41 km) |
| Jefferson Hills to Obernburg am Main | 4,135.63 mi (6,655.66 km) |
| Jefferson Hills to Obernkirchen | 4,057.35 mi (6,529.68 km) |
| Jefferson Hills to Oberschleissheim | 4,285.11 mi (6,896.21 km) |
| Jefferson Hills to Oberstdorf | 4,262.60 mi (6,859.98 km) |
| Jefferson Hills to Obertraubling | 4,283.82 mi (6,894.15 km) |
| Jefferson Hills to Obertshausen | 4,116.19 mi (6,624.36 km) |
| Jefferson Hills to Oberursel | 4,101.75 mi (6,601.12 km) |
| Jefferson Hills to Ochsenfurt | 4,178.21 mi (6,724.18 km) |
| Jefferson Hills to Ochsenhausen | 4,226.54 mi (6,801.97 km) |
| Jefferson Hills to Ochtrup | 3,986.06 mi (6,414.95 km) |
| Jefferson Hills to Odenthal | 4,018.70 mi (6,467.47 km) |
| Jefferson Hills to Oelde | 4,034.02 mi (6,492.13 km) |
| Jefferson Hills to Oelsnitz | 4,233.73 mi (6,813.53 km) |
| Jefferson Hills to Oer-Erkenschwick | 4,005.35 mi (6,445.99 km) |
