| Boo to Opole | 597.79 mi (962.05 km) |
| Boo to Orzesze | 633.67 mi (1,019.79 km) |
| Boo to Osowa | 337.93 mi (543.85 km) |
| Boo to Ostroda | 393.52 mi (633.31 km) |
| Boo to Ostroleka | 450.12 mi (724.40 km) |
| Boo to Ostrow Mazowiecka | 471.59 mi (758.95 km) |
| Boo to Ostrow Wielkopolski | 530.03 mi (853.00 km) |
| Boo to Ostrowiec Swietokrzyski | 592.28 mi (953.19 km) |
| Boo to Ostrzeszow | 545.98 mi (878.67 km) |
| Boo to Oswiecim | 642.24 mi (1,033.59 km) |
| Boo to Otwock | 511.00 mi (822.38 km) |
| Boo to Ozarow Mazowiecki | 500.38 mi (805.28 km) |
| Boo to Ozimek | 597.22 mi (961.13 km) |
| Boo to Ozorkow | 509.42 mi (819.82 km) |
| Boo to Pabianice | 531.55 mi (855.45 km) |
