| Greentree to Opole | 4,274.34 mi (6,878.89 km) |
| Greentree to Orzesze | 4,323.34 mi (6,957.75 km) |
| Greentree to Osowa | 4,168.37 mi (6,708.34 km) |
| Greentree to Ostroda | 4,245.74 mi (6,832.86 km) |
| Greentree to Ostroleka | 4,324.74 mi (6,959.99 km) |
| Greentree to Ostrow Mazowiecka | 4,346.13 mi (6,994.41 km) |
| Greentree to Ostrow Wielkopolski | 4,236.59 mi (6,818.14 km) |
| Greentree to Ostrowiec Swietokrzyski | 4,395.16 mi (7,073.33 km) |
| Greentree to Ostrzeszow | 4,248.83 mi (6,837.83 km) |
| Greentree to Oswiecim | 4,345.27 mi (6,993.03 km) |
| Greentree to Otwock | 4,347.70 mi (6,996.95 km) |
| Greentree to Ozarow Mazowiecki | 4,327.18 mi (6,963.93 km) |
| Greentree to Ozimek | 4,284.76 mi (6,895.65 km) |
| Greentree to Ozorkow | 4,280.32 mi (6,888.52 km) |
| Greentree to Pabianice | 4,294.97 mi (6,912.08 km) |
