| Mardin to Opole | 1,451.10 mi (2,335.31 km) |
| Mardin to Orzesze | 1,401.93 mi (2,256.19 km) |
| Mardin to Osowa | 1,581.82 mi (2,545.69 km) |
| Mardin to Ostroda | 1,503.06 mi (2,418.93 km) |
| Mardin to Ostroleka | 1,424.64 mi (2,292.74 km) |
| Mardin to Ostrow Mazowiecka | 1,401.98 mi (2,256.27 km) |
| Mardin to Ostrow Wielkopolski | 1,491.05 mi (2,399.62 km) |
| Mardin to Ostrowiec Swietokrzyski | 1,335.82 mi (2,149.79 km) |
| Mardin to Ostrzeszow | 1,478.18 mi (2,378.90 km) |
| Mardin to Oswiecim | 1,380.05 mi (2,220.97 km) |
| Mardin to Otwock | 1,391.19 mi (2,238.90 km) |
| Mardin to Ozarow Mazowiecki | 1,410.87 mi (2,270.57 km) |
| Mardin to Ozimek | 1,440.81 mi (2,318.76 km) |
| Mardin to Ozorkow | 1,451.55 mi (2,336.04 km) |
| Mardin to Pabianice | 1,435.36 mi (2,309.98 km) |
