| Lockport to Opole | 4,662.16 mi (7,503.02 km) |
| Lockport to Orzesze | 4,712.59 mi (7,584.18 km) |
| Lockport to Osowa | 4,518.40 mi (7,271.66 km) |
| Lockport to Ostroda | 4,597.14 mi (7,398.39 km) |
| Lockport to Ostroleka | 4,675.81 mi (7,525.00 km) |
| Lockport to Ostrow Mazowiecka | 4,698.34 mi (7,561.25 km) |
| Lockport to Ostrow Wielkopolski | 4,615.77 mi (7,428.36 km) |
| Lockport to Ostrowiec Swietokrzyski | 4,766.48 mi (7,670.91 km) |
| Lockport to Ostrzeszow | 4,629.72 mi (7,450.81 km) |
| Lockport to Oswiecim | 4,733.61 mi (7,618.00 km) |
| Lockport to Otwock | 4,708.81 mi (7,578.09 km) |
| Lockport to Ozarow Mazowiecki | 4,689.26 mi (7,546.63 km) |
| Lockport to Ozimek | 4,671.41 mi (7,517.90 km) |
| Lockport to Ozorkow | 4,650.78 mi (7,484.71 km) |
| Lockport to Pabianice | 4,667.96 mi (7,512.36 km) |
