| Kas to Opole | 1,156.05 mi (1,860.49 km) |
| Kas to Orzesze | 1,106.33 mi (1,780.47 km) |
| Kas to Osowa | 1,367.35 mi (2,200.54 km) |
| Kas to Ostroda | 1,295.48 mi (2,084.87 km) |
| Kas to Ostroleka | 1,229.17 mi (1,978.16 km) |
| Kas to Ostrow Mazowiecka | 1,206.94 mi (1,942.38 km) |
| Kas to Ostrow Wielkopolski | 1,215.24 mi (1,955.74 km) |
| Kas to Ostrowiec Swietokrzyski | 1,096.63 mi (1,764.86 km) |
| Kas to Ostrzeszow | 1,199.04 mi (1,929.66 km) |
| Kas to Oswiecim | 1,088.46 mi (1,751.71 km) |
| Kas to Otwock | 1,173.49 mi (1,888.55 km) |
| Kas to Ozarow Mazowiecki | 1,187.91 mi (1,911.76 km) |
| Kas to Ozimek | 1,149.52 mi (1,849.97 km) |
| Kas to Ozorkow | 1,201.65 mi (1,933.87 km) |
| Kas to Pabianice | 1,180.46 mi (1,899.76 km) |
