| Walnut Creek to Opole | 5,852.93 mi (9,419.38 km) |
| Walnut Creek to Orzesze | 5,901.91 mi (9,498.20 km) |
| Walnut Creek to Osowa | 5,640.65 mi (9,077.75 km) |
| Walnut Creek to Ostroda | 5,714.44 mi (9,196.51 km) |
| Walnut Creek to Ostroleka | 5,784.49 mi (9,309.24 km) |
| Walnut Creek to Ostrow Mazowiecka | 5,807.28 mi (9,345.91 km) |
| Walnut Creek to Ostrow Wielkopolski | 5,791.97 mi (9,321.27 km) |
| Walnut Creek to Ostrowiec Swietokrzyski | 5,911.17 mi (9,513.10 km) |
| Walnut Creek to Ostrzeszow | 5,808.36 mi (9,347.65 km) |
| Walnut Creek to Oswiecim | 5,919.01 mi (9,525.73 km) |
| Walnut Creek to Otwock | 5,836.40 mi (9,392.78 km) |
| Walnut Creek to Ozarow Mazowiecki | 5,820.90 mi (9,367.84 km) |
| Walnut Creek to Ozimek | 5,858.78 mi (9,428.79 km) |
| Walnut Creek to Ozorkow | 5,804.60 mi (9,341.60 km) |
| Walnut Creek to Pabianice | 5,825.73 mi (9,375.60 km) |
