| Cities | Distance |
|---|---|
| Riom to Oegstgeest | 438.86 mi (706.28 km) |
| Riom to Oirschot | 399.95 mi (643.67 km) |
| Riom to Oisterwijk | 404.42 mi (650.85 km) |
| Riom to Oldebroek | 470.08 mi (756.53 km) |
| Riom to Oldenzaal | 476.09 mi (766.19 km) |
| Riom to Ommen | 481.17 mi (774.38 km) |
| Riom to Oosterend | 508.74 mi (818.74 km) |
| Riom to Oosterhout | 405.08 mi (651.92 km) |
| Riom to Oosterwolde | 510.58 mi (821.69 km) |
| Riom to Oostzaan | 458.84 mi (738.43 km) |
| Riom to Opmeer | 477.47 mi (768.41 km) |
| Riom to Oss | 420.21 mi (676.25 km) |
| Riom to Oud-Beijerland | 413.39 mi (665.29 km) |
| Riom to Oudenbosch | 398.73 mi (641.69 km) |
| Riom to Oudewater | 430.45 mi (692.74 km) |