| Kallithea to Orzesze | 877.54 mi (1,412.27 km) |
| Kallithea to Osowa | 1,164.81 mi (1,874.59 km) |
| Kallithea to Ostroda | 1,102.58 mi (1,774.42 km) |
| Kallithea to Ostroleka | 1,049.44 mi (1,688.90 km) |
| Kallithea to Ostrow Mazowiecka | 1,029.66 mi (1,657.08 km) |
| Kallithea to Ostrow Wielkopolski | 988.70 mi (1,591.16 km) |
| Kallithea to Ostrowiec Swietokrzyski | 904.09 mi (1,454.99 km) |
| Kallithea to Ostrzeszow | 971.86 mi (1,564.06 km) |
| Kallithea to Oswiecim | 863.95 mi (1,390.40 km) |
| Kallithea to Otwock | 985.86 mi (1,586.59 km) |
| Kallithea to Ozarow Mazowiecki | 995.62 mi (1,602.30 km) |
| Kallithea to Ozimek | 919.33 mi (1,479.52 km) |
| Kallithea to Ozorkow | 991.77 mi (1,596.09 km) |
| Kallithea to Pabianice | 969.51 mi (1,560.27 km) |
| Kallithea to Parczew | 946.29 mi (1,522.91 km) |
