| Summerfield to Oberkirch | 4,072.29 mi (6,553.71 km) |
| Summerfield to Obernburg am Main | 4,077.18 mi (6,561.59 km) |
| Summerfield to Obernkirchen | 4,006.94 mi (6,448.55 km) |
| Summerfield to Oberschleissheim | 4,224.25 mi (6,798.28 km) |
| Summerfield to Oberstdorf | 4,197.66 mi (6,755.47 km) |
| Summerfield to Obertraubling | 4,225.89 mi (6,800.91 km) |
| Summerfield to Obertshausen | 4,058.16 mi (6,530.98 km) |
| Summerfield to Oberursel | 4,043.90 mi (6,508.03 km) |
| Summerfield to Ochsenfurt | 4,120.13 mi (6,630.71 km) |
| Summerfield to Ochsenhausen | 4,163.31 mi (6,700.19 km) |
| Summerfield to Ochtrup | 3,933.59 mi (6,330.51 km) |
| Summerfield to Odenthal | 3,962.16 mi (6,376.47 km) |
| Summerfield to Oelde | 3,981.20 mi (6,407.12 km) |
| Summerfield to Oelsnitz | 4,180.39 mi (6,727.69 km) |
| Summerfield to Oer-Erkenschwick | 3,951.01 mi (6,358.53 km) |
