| Santander to Opole | 1,132.06 mi (1,821.88 km) |
| Santander to Orzesze | 1,156.61 mi (1,861.38 km) |
| Santander to Osowa | 1,254.17 mi (2,018.40 km) |
| Santander to Ostroda | 1,286.92 mi (2,071.10 km) |
| Santander to Ostroleka | 1,332.10 mi (2,143.80 km) |
| Santander to Ostrow Mazowiecka | 1,339.21 mi (2,155.25 km) |
| Santander to Ostrow Wielkopolski | 1,149.72 mi (1,850.30 km) |
| Santander to Ostrowiec Swietokrzyski | 1,282.76 mi (2,064.40 km) |
| Santander to Ostrzeszow | 1,148.80 mi (1,848.81 km) |
| Santander to Oswiecim | 1,174.93 mi (1,890.87 km) |
| Santander to Otwock | 1,299.30 mi (2,091.02 km) |
| Santander to Ozarow Mazowiecki | 1,282.60 mi (2,064.14 km) |
| Santander to Ozimek | 1,143.89 mi (1,840.91 km) |
| Santander to Ozorkow | 1,216.10 mi (1,957.12 km) |
| Santander to Pabianice | 1,212.94 mi (1,952.04 km) |
