| Casciana Terme to Oegstgeest | 661.98 mi (1,065.36 km) |
| Casciana Terme to Oirschot | 603.76 mi (971.65 km) |
| Casciana Terme to Oisterwijk | 610.82 mi (983.02 km) |
| Casciana Terme to Oldebroek | 653.57 mi (1,051.82 km) |
| Casciana Terme to Oldenzaal | 630.54 mi (1,014.76 km) |
| Casciana Terme to Ommen | 650.42 mi (1,046.75 km) |
| Casciana Terme to Oosterend | 687.01 mi (1,105.63 km) |
| Casciana Terme to Oosterhout | 621.21 mi (999.74 km) |
| Casciana Terme to Oosterwolde | 683.09 mi (1,099.33 km) |
| Casciana Terme to Oostzaan | 669.52 mi (1,077.49 km) |
| Casciana Terme to Opmeer | 685.03 mi (1,102.45 km) |
| Casciana Terme to Oss | 616.41 mi (992.02 km) |
| Casciana Terme to Oud-Beijerland | 641.07 mi (1,031.71 km) |
| Casciana Terme to Oudenbosch | 624.76 mi (1,005.46 km) |
| Casciana Terme to Oudewater | 643.98 mi (1,036.38 km) |
