| Kalkara to Orzesze | 1,007.70 mi (1,621.74 km) |
| Kalkara to Osowa | 1,294.66 mi (2,083.55 km) |
| Kalkara to Ostroda | 1,258.24 mi (2,024.94 km) |
| Kalkara to Ostroleka | 1,235.06 mi (1,987.64 km) |
| Kalkara to Ostrow Mazowiecka | 1,222.30 mi (1,967.10 km) |
| Kalkara to Ostrow Wielkopolski | 1,100.91 mi (1,771.75 km) |
| Kalkara to Ostrowiec Swietokrzyski | 1,093.97 mi (1,760.58 km) |
| Kalkara to Ostrzeszow | 1,085.95 mi (1,747.67 km) |
| Kalkara to Oswiecim | 1,005.45 mi (1,618.11 km) |
| Kalkara to Otwock | 1,168.89 mi (1,881.15 km) |
| Kalkara to Ozarow Mazowiecki | 1,169.21 mi (1,881.66 km) |
| Kalkara to Ozimek | 1,037.80 mi (1,670.17 km) |
| Kalkara to Ozorkow | 1,135.14 mi (1,826.82 km) |
| Kalkara to Pabianice | 1,114.94 mi (1,794.32 km) |
| Kalkara to Parczew | 1,162.83 mi (1,871.39 km) |
