| Alcanar to Opole | 1,091.10 mi (1,755.95 km) |
| Alcanar to Orzesze | 1,103.06 mi (1,775.20 km) |
| Alcanar to Osowa | 1,267.63 mi (2,040.05 km) |
| Alcanar to Ostroda | 1,282.48 mi (2,063.95 km) |
| Alcanar to Ostroleka | 1,311.39 mi (2,110.49 km) |
| Alcanar to Ostrow Mazowiecka | 1,313.33 mi (2,113.60 km) |
| Alcanar to Ostrow Wielkopolski | 1,125.54 mi (1,811.39 km) |
| Alcanar to Ostrowiec Swietokrzyski | 1,231.10 mi (1,981.26 km) |
| Alcanar to Ostrzeszow | 1,120.23 mi (1,802.84 km) |
| Alcanar to Oswiecim | 1,117.47 mi (1,798.40 km) |
| Alcanar to Otwock | 1,266.04 mi (2,037.50 km) |
| Alcanar to Ozarow Mazowiecki | 1,252.78 mi (2,016.15 km) |
| Alcanar to Ozimek | 1,101.63 mi (1,772.90 km) |
| Alcanar to Ozorkow | 1,189.40 mi (1,914.16 km) |
| Alcanar to Pabianice | 1,180.84 mi (1,900.38 km) |
