| Grenade to Orzesze | 930.58 mi (1,497.62 km) |
| Grenade to Osowa | 1,065.20 mi (1,714.27 km) |
| Grenade to Ostroda | 1,087.29 mi (1,749.82 km) |
| Grenade to Ostroleka | 1,123.64 mi (1,808.32 km) |
| Grenade to Ostrow Mazowiecka | 1,128.04 mi (1,815.40 km) |
| Grenade to Ostrow Wielkopolski | 938.01 mi (1,509.57 km) |
| Grenade to Ostrowiec Swietokrzyski | 1,058.57 mi (1,703.60 km) |
| Grenade to Ostrzeszow | 934.77 mi (1,504.37 km) |
| Grenade to Oswiecim | 947.33 mi (1,524.59 km) |
| Grenade to Otwock | 1,084.06 mi (1,744.62 km) |
| Grenade to Ozarow Mazowiecki | 1,068.99 mi (1,720.37 km) |
| Grenade to Ozimek | 922.98 mi (1,485.39 km) |
| Grenade to Ozorkow | 1,003.61 mi (1,615.16 km) |
| Grenade to Pabianice | 997.64 mi (1,605.55 km) |
| Grenade to Parczew | 1,134.70 mi (1,826.12 km) |
