| Williamsport to Opole | 4,287.74 mi (6,900.45 km) |
| Williamsport to Orzesze | 4,337.22 mi (6,980.09 km) |
| Williamsport to Osowa | 4,172.05 mi (6,714.26 km) |
| Williamsport to Ostroda | 4,249.96 mi (6,839.66 km) |
| Williamsport to Ostroleka | 4,329.08 mi (6,966.99 km) |
| Williamsport to Ostrow Mazowiecka | 4,350.81 mi (7,001.95 km) |
| Williamsport to Ostrow Wielkopolski | 4,247.70 mi (6,836.02 km) |
| Williamsport to Ostrowiec Swietokrzyski | 4,404.69 mi (7,088.67 km) |
| Williamsport to Ostrzeszow | 4,260.40 mi (6,856.46 km) |
| Williamsport to Oswiecim | 4,358.97 mi (7,015.08 km) |
| Williamsport to Otwock | 4,354.58 mi (7,008.02 km) |
| Williamsport to Ozarow Mazowiecki | 4,334.25 mi (6,975.30 km) |
| Williamsport to Ozimek | 4,297.88 mi (6,916.78 km) |
| Williamsport to Ozorkow | 4,289.36 mi (6,903.05 km) |
| Williamsport to Pabianice | 4,304.67 mi (6,927.70 km) |
