| Alpena to Opole | 4,328.97 mi (6,966.80 km) |
| Alpena to Orzesze | 4,379.39 mi (7,047.96 km) |
| Alpena to Osowa | 4,186.18 mi (6,737.00 km) |
| Alpena to Ostroda | 4,264.91 mi (6,863.71 km) |
| Alpena to Ostroleka | 4,343.64 mi (6,990.41 km) |
| Alpena to Ostrow Mazowiecka | 4,366.13 mi (7,026.61 km) |
| Alpena to Ostrow Wielkopolski | 4,282.69 mi (6,892.32 km) |
| Alpena to Ostrowiec Swietokrzyski | 4,433.62 mi (7,135.22 km) |
| Alpena to Ostrzeszow | 4,296.61 mi (6,914.73 km) |
| Alpena to Oswiecim | 4,400.42 mi (7,081.79 km) |
| Alpena to Otwock | 4,376.25 mi (7,042.89 km) |
| Alpena to Ozarow Mazowiecki | 4,356.65 mi (7,011.36 km) |
| Alpena to Ozimek | 4,338.23 mi (6,981.71 km) |
| Alpena to Ozorkow | 4,317.90 mi (6,948.99 km) |
| Alpena to Pabianice | 4,335.03 mi (6,976.55 km) |
