| Olgiate Olona to Orzesze | 552.77 mi (889.60 km) |
| Olgiate Olona to Osowa | 740.36 mi (1,191.50 km) |
| Olgiate Olona to Ostroda | 744.15 mi (1,197.60 km) |
| Olgiate Olona to Ostroleka | 765.90 mi (1,232.59 km) |
| Olgiate Olona to Ostrow Mazowiecka | 766.29 mi (1,233.22 km) |
| Olgiate Olona to Ostrow Wielkopolski | 581.53 mi (935.89 km) |
| Olgiate Olona to Ostrowiec Swietokrzyski | 680.76 mi (1,095.57 km) |
| Olgiate Olona to Ostrzeszow | 574.69 mi (924.88 km) |
| Olgiate Olona to Oswiecim | 567.14 mi (912.73 km) |
| Olgiate Olona to Otwock | 717.62 mi (1,154.89 km) |
| Olgiate Olona to Ozarow Mazowiecki | 705.25 mi (1,134.99 km) |
| Olgiate Olona to Ozimek | 552.64 mi (889.39 km) |
| Olgiate Olona to Ozorkow | 643.46 mi (1,035.56 km) |
| Olgiate Olona to Pabianice | 633.42 mi (1,019.40 km) |
| Olgiate Olona to Parczew | 759.34 mi (1,222.04 km) |
