| Portage to Opole | 4,547.07 mi (7,317.81 km) |
| Portage to Orzesze | 4,597.41 mi (7,398.82 km) |
| Portage to Osowa | 4,407.49 mi (7,093.16 km) |
| Portage to Ostroda | 4,486.19 mi (7,219.82 km) |
| Portage to Ostroleka | 4,565.01 mi (7,346.68 km) |
| Portage to Ostrow Mazowiecka | 4,587.43 mi (7,382.76 km) |
| Portage to Ostrow Wielkopolski | 4,501.60 mi (7,244.62 km) |
| Portage to Ostrowiec Swietokrzyski | 4,653.42 mi (7,488.95 km) |
| Portage to Ostrzeszow | 4,515.37 mi (7,266.79 km) |
| Portage to Oswiecim | 4,618.56 mi (7,432.85 km) |
| Portage to Otwock | 4,596.86 mi (7,397.93 km) |
| Portage to Ozarow Mazowiecki | 4,577.17 mi (7,366.24 km) |
| Portage to Ozimek | 4,556.47 mi (7,332.92 km) |
| Portage to Ozorkow | 4,537.66 mi (7,302.66 km) |
| Portage to Pabianice | 4,554.57 mi (7,329.88 km) |
