| Santarem to Opole | 1,510.14 mi (2,430.34 km) |
| Santarem to Orzesze | 1,531.66 mi (2,464.98 km) |
| Santarem to Osowa | 1,640.36 mi (2,639.90 km) |
| Santarem to Ostroda | 1,671.85 mi (2,690.58 km) |
| Santarem to Ostroleka | 1,715.08 mi (2,760.16 km) |
| Santarem to Ostrow Mazowiecka | 1,721.38 mi (2,770.29 km) |
| Santarem to Ostrow Wielkopolski | 1,531.36 mi (2,464.48 km) |
| Santarem to Ostrowiec Swietokrzyski | 1,659.09 mi (2,670.06 km) |
| Santarem to Ostrzeszow | 1,529.62 mi (2,461.68 km) |
| Santarem to Oswiecim | 1,549.02 mi (2,492.91 km) |
| Santarem to Otwock | 1,679.94 mi (2,703.61 km) |
| Santarem to Ozarow Mazowiecki | 1,663.83 mi (2,677.68 km) |
| Santarem to Ozimek | 1,521.74 mi (2,449.00 km) |
| Santarem to Ozorkow | 1,597.61 mi (2,571.10 km) |
| Santarem to Pabianice | 1,593.41 mi (2,564.34 km) |
