| Walnut to Opole | 5,995.11 mi (9,648.19 km) |
| Walnut to Orzesze | 6,044.98 mi (9,728.46 km) |
| Walnut to Osowa | 5,795.92 mi (9,327.64 km) |
| Walnut to Ostroda | 5,871.70 mi (9,449.59 km) |
| Walnut to Ostroleka | 5,944.49 mi (9,566.73 km) |
| Walnut to Ostrow Mazowiecka | 5,967.49 mi (9,603.75 km) |
| Walnut to Ostrow Wielkopolski | 5,936.84 mi (9,554.42 km) |
| Walnut to Ostrowiec Swietokrzyski | 6,064.65 mi (9,760.11 km) |
| Walnut to Ostrzeszow | 5,952.85 mi (9,580.19 km) |
| Walnut to Oswiecim | 6,063.20 mi (9,757.79 km) |
| Walnut to Otwock | 5,992.84 mi (9,644.54 km) |
| Walnut to Ozarow Mazowiecki | 5,976.26 mi (9,617.85 km) |
| Walnut to Ozimek | 6,001.82 mi (9,658.99 km) |
| Walnut to Ozorkow | 5,954.76 mi (9,583.26 km) |
| Walnut to Pabianice | 5,975.24 mi (9,616.21 km) |
