| Westmont to Opole | 6,011.97 mi (9,675.33 km) |
| Westmont to Orzesze | 6,061.80 mi (9,755.53 km) |
| Westmont to Osowa | 5,811.92 mi (9,353.39 km) |
| Westmont to Ostroda | 5,887.59 mi (9,475.16 km) |
| Westmont to Ostroleka | 5,960.21 mi (9,592.03 km) |
| Westmont to Ostrow Mazowiecka | 5,983.20 mi (9,629.03 km) |
| Westmont to Ostrow Wielkopolski | 5,953.52 mi (9,581.27 km) |
| Westmont to Ostrowiec Swietokrzyski | 6,080.82 mi (9,786.13 km) |
| Westmont to Ostrzeszow | 5,969.56 mi (9,607.08 km) |
| Westmont to Oswiecim | 6,079.96 mi (9,784.74 km) |
| Westmont to Otwock | 6,008.80 mi (9,670.23 km) |
| Westmont to Ozarow Mazowiecki | 5,992.28 mi (9,643.65 km) |
| Westmont to Ozimek | 6,018.63 mi (9,686.04 km) |
| Westmont to Ozorkow | 5,971.12 mi (9,609.58 km) |
| Westmont to Pabianice | 5,991.64 mi (9,642.61 km) |
