| Pottstown to Opole | 4,283.30 mi (6,893.31 km) |
| Pottstown to Orzesze | 4,332.46 mi (6,972.42 km) |
| Pottstown to Osowa | 4,174.39 mi (6,718.03 km) |
| Pottstown to Ostroda | 4,251.94 mi (6,842.84 km) |
| Pottstown to Ostroleka | 4,330.99 mi (6,970.05 km) |
| Pottstown to Ostrow Mazowiecka | 4,352.48 mi (7,004.64 km) |
| Pottstown to Ostrow Wielkopolski | 4,244.86 mi (6,831.45 km) |
| Pottstown to Ostrowiec Swietokrzyski | 4,402.98 mi (7,085.92 km) |
| Pottstown to Ostrzeszow | 4,257.24 mi (6,851.36 km) |
| Pottstown to Oswiecim | 4,354.33 mi (7,007.62 km) |
| Pottstown to Otwock | 4,354.72 mi (7,008.25 km) |
| Pottstown to Ozarow Mazowiecki | 4,334.25 mi (6,975.31 km) |
| Pottstown to Ozimek | 4,293.64 mi (6,909.95 km) |
| Pottstown to Ozorkow | 4,287.98 mi (6,900.83 km) |
| Pottstown to Pabianice | 4,302.82 mi (6,924.73 km) |
