| Buffalo Grove to Opole | 4,629.94 mi (7,451.17 km) |
| Buffalo Grove to Orzesze | 4,680.41 mi (7,532.38 km) |
| Buffalo Grove to Osowa | 4,484.82 mi (7,217.61 km) |
| Buffalo Grove to Ostroda | 4,563.57 mi (7,344.36 km) |
| Buffalo Grove to Ostroleka | 4,642.19 mi (7,470.88 km) |
| Buffalo Grove to Ostrow Mazowiecka | 4,664.74 mi (7,507.18 km) |
| Buffalo Grove to Ostrow Wielkopolski | 4,583.23 mi (7,375.99 km) |
| Buffalo Grove to Ostrowiec Swietokrzyski | 4,733.55 mi (7,617.92 km) |
| Buffalo Grove to Ostrzeszow | 4,597.24 mi (7,398.54 km) |
| Buffalo Grove to Oswiecim | 4,701.37 mi (7,566.13 km) |
| Buffalo Grove to Otwock | 4,675.53 mi (7,524.53 km) |
| Buffalo Grove to Ozarow Mazowiecki | 4,656.02 mi (7,493.15 km) |
| Buffalo Grove to Ozimek | 4,639.14 mi (7,465.97 km) |
| Buffalo Grove to Ozorkow | 4,617.88 mi (7,431.77 km) |
| Buffalo Grove to Pabianice | 4,635.16 mi (7,459.56 km) |
