| Grojec to Oberkirch | 609.46 mi (980.83 km) |
| Grojec to Obernburg am Main | 529.63 mi (852.36 km) |
| Grojec to Obernkirchen | 499.29 mi (803.53 km) |
| Grojec to Oberschleissheim | 481.77 mi (775.34 km) |
| Grojec to Oberstdorf | 564.18 mi (907.97 km) |
| Grojec to Obertraubling | 431.91 mi (695.09 km) |
| Grojec to Obertshausen | 537.52 mi (865.05 km) |
| Grojec to Oberursel | 545.52 mi (877.94 km) |
| Grojec to Ochsenfurt | 495.73 mi (797.80 km) |
| Grojec to Ochsenhausen | 550.74 mi (886.33 km) |
| Grojec to Ochtrup | 580.95 mi (934.95 km) |
| Grojec to Odenthal | 593.99 mi (955.93 km) |
| Grojec to Oelde | 542.11 mi (872.44 km) |
| Grojec to Oelsnitz | 389.97 mi (627.59 km) |
| Grojec to Oer-Erkenschwick | 581.76 mi (936.26 km) |
