| Alzano Lombardo to Oegstgeest | 505.34 mi (813.27 km) |
| Alzano Lombardo to Oirschot | 446.75 mi (718.97 km) |
| Alzano Lombardo to Oisterwijk | 453.86 mi (730.42 km) |
| Alzano Lombardo to Oldebroek | 495.28 mi (797.08 km) |
| Alzano Lombardo to Oldenzaal | 472.18 mi (759.90 km) |
| Alzano Lombardo to Ommen | 492.00 mi (791.79 km) |
| Alzano Lombardo to Oosterend | 528.59 mi (850.68 km) |
| Alzano Lombardo to Oosterhout | 464.73 mi (747.90 km) |
| Alzano Lombardo to Oosterwolde | 524.67 mi (844.38 km) |
| Alzano Lombardo to Oostzaan | 512.05 mi (824.06 km) |
| Alzano Lombardo to Opmeer | 527.27 mi (848.56 km) |
| Alzano Lombardo to Oss | 458.82 mi (738.39 km) |
| Alzano Lombardo to Oud-Beijerland | 485.12 mi (780.72 km) |
| Alzano Lombardo to Oudenbosch | 468.99 mi (754.77 km) |
| Alzano Lombardo to Oudewater | 486.96 mi (783.69 km) |
