| Arad to Opole | 346.79 mi (558.10 km) |
| Arad to Orzesze | 298.91 mi (481.06 km) |
| Arad to Osowa | 583.68 mi (939.33 km) |
| Arad to Ostroda | 523.33 mi (842.23 km) |
| Arad to Ostroleka | 476.31 mi (766.54 km) |
| Arad to Ostrow Mazowiecka | 458.50 mi (737.88 km) |
| Arad to Ostrow Wielkopolski | 410.09 mi (659.97 km) |
| Arad to Ostrowiec Swietokrzyski | 328.79 mi (529.14 km) |
| Arad to Ostrzeszow | 393.36 mi (633.06 km) |
| Arad to Oswiecim | 283.78 mi (456.71 km) |
| Arad to Otwock | 410.54 mi (660.70 km) |
| Arad to Ozarow Mazowiecki | 418.08 mi (672.83 km) |
| Arad to Ozimek | 341.66 mi (549.85 km) |
| Arad to Ozorkow | 410.53 mi (660.68 km) |
| Arad to Pabianice | 388.26 mi (624.84 km) |
