| Mersin to Opole | 1,264.10 mi (2,034.38 km) |
| Mersin to Orzesze | 1,213.45 mi (1,952.86 km) |
| Mersin to Osowa | 1,439.25 mi (2,316.25 km) |
| Mersin to Ostroda | 1,362.35 mi (2,192.49 km) |
| Mersin to Ostroleka | 1,288.33 mi (2,073.37 km) |
| Mersin to Ostrow Mazowiecka | 1,265.29 mi (2,036.29 km) |
| Mersin to Ostrow Wielkopolski | 1,314.76 mi (2,115.89 km) |
| Mersin to Ostrowiec Swietokrzyski | 1,174.24 mi (1,889.76 km) |
| Mersin to Ostrzeszow | 1,299.89 mi (2,091.97 km) |
| Mersin to Oswiecim | 1,193.02 mi (1,919.98 km) |
| Mersin to Otwock | 1,242.34 mi (1,999.36 km) |
| Mersin to Ozarow Mazowiecki | 1,259.82 mi (2,027.49 km) |
| Mersin to Ozimek | 1,255.47 mi (2,020.48 km) |
| Mersin to Ozorkow | 1,287.60 mi (2,072.20 km) |
| Mersin to Pabianice | 1,268.43 mi (2,041.35 km) |
