| Champaign to Opole | 4,747.50 mi (7,640.36 km) |
| Champaign to Orzesze | 4,797.85 mi (7,721.39 km) |
| Champaign to Osowa | 4,607.02 mi (7,414.28 km) |
| Champaign to Ostroda | 4,685.74 mi (7,540.96 km) |
| Champaign to Ostroleka | 4,764.52 mi (7,667.75 km) |
| Champaign to Ostrow Mazowiecka | 4,786.97 mi (7,703.89 km) |
| Champaign to Ostrow Wielkopolski | 4,701.88 mi (7,566.95 km) |
| Champaign to Ostrowiec Swietokrzyski | 4,853.49 mi (7,810.94 km) |
| Champaign to Ostrzeszow | 4,715.68 mi (7,589.16 km) |
| Champaign to Oswiecim | 4,818.97 mi (7,755.39 km) |
| Champaign to Otwock | 4,796.68 mi (7,719.51 km) |
| Champaign to Ozarow Mazowiecki | 4,777.02 mi (7,687.87 km) |
| Champaign to Ozimek | 4,756.87 mi (7,655.44 km) |
| Champaign to Ozorkow | 4,737.74 mi (7,624.66 km) |
| Champaign to Pabianice | 4,754.71 mi (7,651.97 km) |
