| Somma Lombardo to Oegstgeest | 488.27 mi (785.80 km) |
| Somma Lombardo to Oirschot | 430.76 mi (693.25 km) |
| Somma Lombardo to Oisterwijk | 437.73 mi (704.46 km) |
| Somma Lombardo to Oldebroek | 484.31 mi (779.43 km) |
| Somma Lombardo to Oldenzaal | 465.23 mi (748.71 km) |
| Somma Lombardo to Ommen | 483.24 mi (777.70 km) |
| Somma Lombardo to Oosterend | 519.40 mi (835.89 km) |
| Somma Lombardo to Oosterhout | 447.42 mi (720.05 km) |
| Somma Lombardo to Oosterwolde | 516.30 mi (830.90 km) |
| Somma Lombardo to Oostzaan | 497.19 mi (800.14 km) |
| Somma Lombardo to Opmeer | 513.35 mi (826.15 km) |
| Somma Lombardo to Oss | 444.55 mi (715.43 km) |
| Somma Lombardo to Oud-Beijerland | 466.66 mi (751.02 km) |
| Somma Lombardo to Oudenbosch | 450.23 mi (724.57 km) |
| Somma Lombardo to Oudewater | 470.86 mi (757.77 km) |
