| Seveso to Orzesze | 542.69 mi (873.38 km) |
| Seveso to Osowa | 733.42 mi (1,180.33 km) |
| Seveso to Ostroda | 736.17 mi (1,184.75 km) |
| Seveso to Ostroleka | 757.00 mi (1,218.27 km) |
| Seveso to Ostrow Mazowiecka | 757.13 mi (1,218.49 km) |
| Seveso to Ostrow Wielkopolski | 572.98 mi (922.12 km) |
| Seveso to Ostrowiec Swietokrzyski | 670.56 mi (1,079.16 km) |
| Seveso to Ostrzeszow | 565.91 mi (910.74 km) |
| Seveso to Oswiecim | 556.85 mi (896.16 km) |
| Seveso to Otwock | 708.20 mi (1,139.74 km) |
| Seveso to Ozarow Mazowiecki | 696.03 mi (1,120.16 km) |
| Seveso to Ozimek | 543.15 mi (874.11 km) |
| Seveso to Ozorkow | 634.56 mi (1,021.23 km) |
| Seveso to Pabianice | 624.26 mi (1,004.65 km) |
| Seveso to Parczew | 749.28 mi (1,205.84 km) |
