| Rocky River to Opole | 4,452.20 mi (7,165.12 km) |
| Rocky River to Orzesze | 4,502.20 mi (7,245.58 km) |
| Rocky River to Osowa | 4,323.77 mi (6,958.44 km) |
| Rocky River to Ostroda | 4,402.21 mi (7,084.68 km) |
| Rocky River to Ostroleka | 4,481.29 mi (7,211.94 km) |
| Rocky River to Ostrow Mazowiecka | 4,503.41 mi (7,247.54 km) |
| Rocky River to Ostrow Wielkopolski | 4,409.26 mi (7,096.02 km) |
| Rocky River to Ostrowiec Swietokrzyski | 4,563.74 mi (7,344.63 km) |
| Rocky River to Ostrzeszow | 4,422.54 mi (7,117.39 km) |
| Rocky River to Oswiecim | 4,523.65 mi (7,280.12 km) |
| Rocky River to Otwock | 4,510.17 mi (7,258.42 km) |
| Rocky River to Ozarow Mazowiecki | 4,490.15 mi (7,226.20 km) |
| Rocky River to Ozimek | 4,461.97 mi (7,180.84 km) |
| Rocky River to Ozorkow | 4,448.03 mi (7,158.41 km) |
| Rocky River to Pabianice | 4,464.21 mi (7,184.45 km) |
