| Buffalo to Opole | 4,273.76 mi (6,877.95 km) |
| Buffalo to Orzesze | 4,323.66 mi (6,958.25 km) |
| Buffalo to Osowa | 4,148.29 mi (6,676.03 km) |
| Buffalo to Ostroda | 4,226.62 mi (6,802.09 km) |
| Buffalo to Ostroleka | 4,305.73 mi (6,929.41 km) |
| Buffalo to Ostrow Mazowiecka | 4,327.76 mi (6,964.86 km) |
| Buffalo to Ostrow Wielkopolski | 4,231.44 mi (6,809.84 km) |
| Buffalo to Ostrowiec Swietokrzyski | 4,386.53 mi (7,059.44 km) |
| Buffalo to Ostrzeszow | 4,244.59 mi (6,831.01 km) |
| Buffalo to Oswiecim | 4,345.18 mi (6,992.89 km) |
| Buffalo to Otwock | 4,333.77 mi (6,974.53 km) |
| Buffalo to Ozarow Mazowiecki | 4,313.67 mi (6,942.18 km) |
| Buffalo to Ozimek | 4,283.60 mi (6,893.79 km) |
| Buffalo to Ozorkow | 4,270.87 mi (6,873.31 km) |
| Buffalo to Pabianice | 4,286.85 mi (6,899.03 km) |
