| Iisalmi to Oegstgeest | 1,135.35 mi (1,827.17 km) |
| Iisalmi to Oirschot | 1,152.28 mi (1,854.41 km) |
| Iisalmi to Oisterwijk | 1,150.08 mi (1,850.87 km) |
| Iisalmi to Oldebroek | 1,084.16 mi (1,744.79 km) |
| Iisalmi to Oldenzaal | 1,065.97 mi (1,715.51 km) |
| Iisalmi to Ommen | 1,067.52 mi (1,718.01 km) |
| Iisalmi to Oosterend | 1,049.49 mi (1,688.99 km) |
| Iisalmi to Oosterhout | 1,155.34 mi (1,859.33 km) |
| Iisalmi to Oosterwolde | 1,044.51 mi (1,680.97 km) |
| Iisalmi to Oostzaan | 1,110.94 mi (1,787.88 km) |
| Iisalmi to Opmeer | 1,094.66 mi (1,761.69 km) |
| Iisalmi to Oss | 1,131.88 mi (1,821.58 km) |
| Iisalmi to Oud-Beijerland | 1,157.27 mi (1,862.45 km) |
| Iisalmi to Oudenbosch | 1,166.76 mi (1,877.72 km) |
| Iisalmi to Oudewater | 1,134.30 mi (1,825.48 km) |
