| Balassagyarmat to Orzesze | 145.22 mi (233.71 km) |
| Balassagyarmat to Osowa | 440.08 mi (708.24 km) |
| Balassagyarmat to Ostroda | 389.50 mi (626.84 km) |
| Balassagyarmat to Ostroleka | 358.73 mi (577.32 km) |
| Balassagyarmat to Ostrow Mazowiecka | 345.72 mi (556.39 km) |
| Balassagyarmat to Ostrow Wielkopolski | 255.33 mi (410.92 km) |
| Balassagyarmat to Ostrowiec Swietokrzyski | 218.68 mi (351.93 km) |
| Balassagyarmat to Ostrzeszow | 238.50 mi (383.82 km) |
| Balassagyarmat to Oswiecim | 135.43 mi (217.95 km) |
| Balassagyarmat to Otwock | 292.35 mi (470.50 km) |
| Balassagyarmat to Ozarow Mazowiecki | 293.57 mi (472.45 km) |
| Balassagyarmat to Ozimek | 185.74 mi (298.92 km) |
| Balassagyarmat to Ozorkow | 268.64 mi (432.34 km) |
| Balassagyarmat to Pabianice | 246.79 mi (397.17 km) |
| Balassagyarmat to Parczew | 292.57 mi (470.85 km) |
