| Fagnano Olona to Oegstgeest | 492.35 mi (792.35 km) |
| Fagnano Olona to Oirschot | 434.63 mi (699.47 km) |
| Fagnano Olona to Oisterwijk | 441.62 mi (710.72 km) |
| Fagnano Olona to Oldebroek | 487.44 mi (784.46 km) |
| Fagnano Olona to Oldenzaal | 467.71 mi (752.71 km) |
| Fagnano Olona to Ommen | 486.02 mi (782.18 km) |
| Fagnano Olona to Oosterend | 522.27 mi (840.51 km) |
| Fagnano Olona to Oosterhout | 451.50 mi (726.62 km) |
| Fagnano Olona to Oosterwolde | 519.04 mi (835.31 km) |
| Fagnano Olona to Oostzaan | 500.92 mi (806.16 km) |
| Fagnano Olona to Opmeer | 516.95 mi (831.95 km) |
| Fagnano Olona to Oss | 448.16 mi (721.24 km) |
| Fagnano Olona to Oud-Beijerland | 470.93 mi (757.89 km) |
| Fagnano Olona to Oudenbosch | 454.53 mi (731.50 km) |
| Fagnano Olona to Oudewater | 474.77 mi (764.07 km) |
