| Forest Grove to Opole | 5,394.60 mi (8,681.78 km) |
| Forest Grove to Orzesze | 5,442.59 mi (8,759.00 km) |
| Forest Grove to Osowa | 5,172.81 mi (8,324.83 km) |
| Forest Grove to Ostroda | 5,244.70 mi (8,440.54 km) |
| Forest Grove to Ostroleka | 5,312.33 mi (8,549.37 km) |
| Forest Grove to Ostrow Mazowiecka | 5,334.85 mi (8,585.61 km) |
| Forest Grove to Ostrow Wielkopolski | 5,331.74 mi (8,580.60 km) |
| Forest Grove to Ostrowiec Swietokrzyski | 5,443.48 mi (8,760.44 km) |
| Forest Grove to Ostrzeszow | 5,348.35 mi (8,607.33 km) |
| Forest Grove to Oswiecim | 5,458.70 mi (8,784.93 km) |
| Forest Grove to Otwock | 5,366.75 mi (8,636.95 km) |
| Forest Grove to Ozarow Mazowiecki | 5,352.17 mi (8,613.48 km) |
| Forest Grove to Ozimek | 5,399.71 mi (8,689.99 km) |
| Forest Grove to Ozorkow | 5,340.04 mi (8,593.96 km) |
| Forest Grove to Pabianice | 5,361.58 mi (8,628.63 km) |
