| Sumner to Oberkirch | 5,181.33 mi (8,338.54 km) |
| Sumner to Obernburg am Main | 5,130.39 mi (8,256.57 km) |
| Sumner to Obernkirchen | 4,987.94 mi (8,027.32 km) |
| Sumner to Oberschleissheim | 5,281.20 mi (8,499.27 km) |
| Sumner to Oberstdorf | 5,300.74 mi (8,530.72 km) |
| Sumner to Obertraubling | 5,252.20 mi (8,452.60 km) |
| Sumner to Obertshausen | 5,109.85 mi (8,223.50 km) |
| Sumner to Oberursel | 5,095.80 mi (8,200.90 km) |
| Sumner to Ochsenfurt | 5,163.26 mi (8,309.46 km) |
| Sumner to Ochsenhausen | 5,253.60 mi (8,454.85 km) |
| Sumner to Ochtrup | 4,947.08 mi (7,961.55 km) |
| Sumner to Odenthal | 5,012.89 mi (8,067.47 km) |
| Sumner to Oelde | 4,990.96 mi (8,032.17 km) |
| Sumner to Oelsnitz | 5,165.46 mi (8,313.01 km) |
| Sumner to Oer-Erkenschwick | 4,980.96 mi (8,016.08 km) |
