| Sundern to Oberkirch | 192.35 mi (309.56 km) |
| Sundern to Obernburg am Main | 113.65 mi (182.91 km) |
| Sundern to Obernkirchen | 81.16 mi (130.62 km) |
| Sundern to Oberschleissheim | 264.91 mi (426.34 km) |
| Sundern to Oberstdorf | 288.74 mi (464.68 km) |
| Sundern to Obertraubling | 245.76 mi (395.51 km) |
| Sundern to Obertshausen | 93.75 mi (150.88 km) |
| Sundern to Oberursel | 80.95 mi (130.28 km) |
| Sundern to Ochsenfurt | 146.67 mi (236.05 km) |
| Sundern to Ochsenhausen | 240.47 mi (386.99 km) |
| Sundern to Ochtrup | 70.50 mi (113.47 km) |
| Sundern to Odenthal | 42.98 mi (69.17 km) |
| Sundern to Oelde | 36.27 mi (58.37 km) |
| Sundern to Oelsnitz | 192.01 mi (309.01 km) |
| Sundern to Oer-Erkenschwick | 39.31 mi (63.26 km) |
