| Simpelveld to Oberkirch | 184.55 mi (297.01 km) |
| Simpelveld to Obernburg am Main | 155.25 mi (249.85 km) |
| Simpelveld to Obernkirchen | 167.13 mi (268.97 km) |
| Simpelveld to Oberschleissheim | 307.31 mi (494.57 km) |
| Simpelveld to Oberstdorf | 305.98 mi (492.43 km) |
| Simpelveld to Obertraubling | 303.82 mi (488.95 km) |
| Simpelveld to Obertshausen | 136.10 mi (219.04 km) |
| Simpelveld to Oberursel | 121.96 mi (196.28 km) |
| Simpelveld to Ochsenfurt | 198.06 mi (318.75 km) |
| Simpelveld to Ochsenhausen | 260.90 mi (419.88 km) |
| Simpelveld to Ochtrup | 108.08 mi (173.95 km) |
| Simpelveld to Odenthal | 51.25 mi (82.48 km) |
| Simpelveld to Oelde | 116.28 mi (187.13 km) |
| Simpelveld to Oelsnitz | 272.48 mi (438.51 km) |
| Simpelveld to Oer-Erkenschwick | 78.29 mi (126.00 km) |
