| Powell to Oberkirch | 4,267.69 mi (6,868.18 km) |
| Powell to Obernburg am Main | 4,264.15 mi (6,862.49 km) |
| Powell to Obernkirchen | 4,181.23 mi (6,729.05 km) |
| Powell to Oberschleissheim | 4,414.83 mi (7,104.98 km) |
| Powell to Oberstdorf | 4,394.67 mi (7,072.53 km) |
| Powell to Obertraubling | 4,411.86 mi (7,100.20 km) |
| Powell to Obertshausen | 4,244.49 mi (6,830.85 km) |
| Powell to Oberursel | 4,229.96 mi (6,807.46 km) |
| Powell to Ochsenfurt | 4,306.46 mi (6,930.58 km) |
| Powell to Ochsenhausen | 4,357.70 mi (7,013.04 km) |
| Powell to Ochtrup | 4,111.28 mi (6,616.46 km) |
| Powell to Odenthal | 4,146.26 mi (6,672.77 km) |
| Powell to Oelde | 4,159.38 mi (6,693.87 km) |
| Powell to Oelsnitz | 4,359.12 mi (7,015.33 km) |
| Powell to Oer-Erkenschwick | 4,131.65 mi (6,649.24 km) |
