| Grenoble to Obernburg am Main | 359.78 mi (579.01 km) |
| Grenoble to Obernkirchen | 513.91 mi (827.07 km) |
| Grenoble to Oberschleissheim | 348.98 mi (561.63 km) |
| Grenoble to Oberstdorf | 266.85 mi (429.45 km) |
| Grenoble to Obertraubling | 400.63 mi (644.76 km) |
| Grenoble to Obertshausen | 367.87 mi (592.02 km) |
| Grenoble to Oberursel | 372.08 mi (598.80 km) |
| Grenoble to Ochsenfurt | 370.01 mi (595.47 km) |
| Grenoble to Ochsenhausen | 283.43 mi (456.13 km) |
| Grenoble to Ochtrup | 490.57 mi (789.50 km) |
| Grenoble to Odenthal | 410.07 mi (659.94 km) |
| Grenoble to Oelde | 473.44 mi (761.93 km) |
| Grenoble to Oelsnitz | 469.54 mi (755.66 km) |
| Grenoble to Oer-Erkenschwick | 452.52 mi (728.26 km) |
| Grenoble to Oerlinghausen | 488.31 mi (785.86 km) |
