| Enid to Oberkirch | 5,019.42 mi (8,077.98 km) |
| Enid to Obernburg am Main | 5,005.01 mi (8,054.79 km) |
| Enid to Obernkirchen | 4,906.00 mi (7,895.45 km) |
| Enid to Oberschleissheim | 5,158.88 mi (8,302.42 km) |
| Enid to Oberstdorf | 5,147.25 mi (8,283.70 km) |
| Enid to Obertraubling | 5,149.84 mi (8,287.86 km) |
| Enid to Obertshausen | 4,984.72 mi (8,022.13 km) |
| Enid to Oberursel | 4,969.99 mi (7,998.42 km) |
| Enid to Ochsenfurt | 5,046.03 mi (8,120.80 km) |
| Enid to Ochsenhausen | 5,107.28 mi (8,219.37 km) |
| Enid to Ochtrup | 4,841.50 mi (7,791.63 km) |
| Enid to Odenthal | 4,884.64 mi (7,861.07 km) |
| Enid to Oelde | 4,889.69 mi (7,869.20 km) |
| Enid to Oelsnitz | 5,087.89 mi (8,188.16 km) |
| Enid to Oer-Erkenschwick | 4,865.58 mi (7,830.40 km) |
