| Mendrisio to Opole | 527.99 mi (849.71 km) |
| Mendrisio to Orzesze | 539.15 mi (867.68 km) |
| Mendrisio to Osowa | 724.10 mi (1,165.33 km) |
| Mendrisio to Ostroda | 728.46 mi (1,172.34 km) |
| Mendrisio to Ostroleka | 750.90 mi (1,208.46 km) |
| Mendrisio to Ostrow Mazowiecka | 751.53 mi (1,209.47 km) |
| Mendrisio to Ostrow Wielkopolski | 566.27 mi (911.32 km) |
| Mendrisio to Ostrowiec Swietokrzyski | 667.27 mi (1,073.87 km) |
| Mendrisio to Ostrzeszow | 559.63 mi (900.63 km) |
| Mendrisio to Oswiecim | 553.83 mi (891.31 km) |
| Mendrisio to Otwock | 703.14 mi (1,131.59 km) |
| Mendrisio to Ozarow Mazowiecki | 690.57 mi (1,111.37 km) |
| Mendrisio to Ozimek | 538.28 mi (866.28 km) |
| Mendrisio to Ozorkow | 628.49 mi (1,011.45 km) |
| Mendrisio to Pabianice | 618.70 mi (995.70 km) |
