| New Philadelphia to Oberkirch | 4,187.94 mi (6,739.84 km) |
| New Philadelphia to Obernburg am Main | 4,185.62 mi (6,736.11 km) |
| New Philadelphia to Obernkirchen | 4,104.58 mi (6,605.68 km) |
| New Philadelphia to Oberschleissheim | 4,335.84 mi (6,977.86 km) |
| New Philadelphia to Oberstdorf | 4,314.75 mi (6,943.91 km) |
| New Philadelphia to Obertraubling | 4,333.54 mi (6,974.16 km) |
| New Philadelphia to Obertshausen | 4,166.05 mi (6,704.61 km) |
| New Philadelphia to Oberursel | 4,151.55 mi (6,681.28 km) |
| New Philadelphia to Ochsenfurt | 4,228.05 mi (6,804.38 km) |
| New Philadelphia to Ochsenhausen | 4,278.14 mi (6,884.99 km) |
| New Philadelphia to Ochtrup | 4,034.07 mi (6,492.20 km) |
| New Philadelphia to Odenthal | 4,068.11 mi (6,546.99 km) |
| New Philadelphia to Oelde | 4,082.12 mi (6,569.53 km) |
| New Philadelphia to Oelsnitz | 4,281.87 mi (6,891.01 km) |
| New Philadelphia to Oer-Erkenschwick | 4,054.00 mi (6,524.28 km) |
