| Ostrow Mazowiecka to Saarijarvi | 695.24 mi (1,118.88 km) |
| Ostrow Mazowiecka to Salo | 526.19 mi (846.82 km) |
| Ostrow Mazowiecka to Sastamala | 591.37 mi (951.72 km) |
| Ostrow Mazowiecka to Savonlinna | 677.64 mi (1,090.56 km) |
| Ostrow Mazowiecka to Seinajoki | 691.21 mi (1,112.40 km) |
| Ostrow Mazowiecka to Siilinjarvi | 739.98 mi (1,190.89 km) |
| Ostrow Mazowiecka to Sipoo | 538.79 mi (867.10 km) |
| Ostrow Mazowiecka to Sippola | 581.12 mi (935.22 km) |
| Ostrow Mazowiecka to Sodankyla | 1,022.01 mi (1,644.76 km) |
| Ostrow Mazowiecka to Somero | 544.65 mi (876.52 km) |
| Ostrow Mazowiecka to Sotkamo | 816.34 mi (1,313.77 km) |
| Ostrow Mazowiecka to Tampere | 604.95 mi (973.57 km) |
| Ostrow Mazowiecka to Tornio | 905.00 mi (1,456.46 km) |
| Ostrow Mazowiecka to Turku | 528.75 mi (850.93 km) |
| Ostrow Mazowiecka to Tuusula | 540.68 mi (870.14 km) |
