| Cities | Distance |
|---|---|
| Riom to Obernburg am Main | 390.20 mi (627.97 km) |
| Riom to Obernkirchen | 517.03 mi (832.09 km) |
| Riom to Oberschleissheim | 429.57 mi (691.33 km) |
| Riom to Oberstdorf | 355.52 mi (572.16 km) |
| Riom to Obertraubling | 473.04 mi (761.29 km) |
| Riom to Obertshausen | 391.11 mi (629.43 km) |
| Riom to Oberursel | 390.13 mi (627.86 km) |
| Riom to Ochsenfurt | 414.01 mi (666.28 km) |
| Riom to Ochsenhausen | 355.46 mi (572.06 km) |
| Riom to Ochtrup | 473.41 mi (761.88 km) |
| Riom to Odenthal | 399.56 mi (643.03 km) |
| Riom to Oelde | 469.68 mi (755.88 km) |
| Riom to Oelsnitz | 520.77 mi (838.11 km) |
| Riom to Oer-Erkenschwick | 439.46 mi (707.24 km) |
| Riom to Oerlinghausen | 489.20 mi (787.29 km) |