| Circleville to Opole | 4,584.84 mi (7,378.59 km) |
| Circleville to Orzesze | 4,634.72 mi (7,458.87 km) |
| Circleville to Osowa | 4,459.14 mi (7,176.29 km) |
| Circleville to Ostroda | 4,537.50 mi (7,302.40 km) |
| Circleville to Ostroleka | 4,616.60 mi (7,429.71 km) |
| Circleville to Ostrow Mazowiecka | 4,638.66 mi (7,465.20 km) |
| Circleville to Ostrow Wielkopolski | 4,542.58 mi (7,310.58 km) |
| Circleville to Ostrowiec Swietokrzyski | 4,697.67 mi (7,560.17 km) |
| Circleville to Ostrzeszow | 4,555.73 mi (7,331.74 km) |
| Circleville to Oswiecim | 4,656.26 mi (7,493.52 km) |
| Circleville to Otwock | 4,644.82 mi (7,475.12 km) |
| Circleville to Ozarow Mazowiecki | 4,624.73 mi (7,442.79 km) |
| Circleville to Ozimek | 4,594.70 mi (7,394.46 km) |
| Circleville to Ozorkow | 4,582.01 mi (7,374.03 km) |
| Circleville to Pabianice | 4,598.00 mi (7,399.77 km) |
