| Srem to Opole | 105.93 mi (170.48 km) |
| Srem to Orzesze | 153.63 mi (247.24 km) |
| Srem to Osowa | 172.42 mi (277.48 km) |
| Srem to Ostroda | 165.92 mi (267.02 km) |
| Srem to Ostroleka | 202.68 mi (326.18 km) |
| Srem to Ostrow Mazowiecka | 211.49 mi (340.35 km) |
| Srem to Ostrow Wielkopolski | 45.72 mi (73.58 km) |
| Srem to Ostrowiec Swietokrzyski | 204.73 mi (329.48 km) |
| Srem to Ostrzeszow | 60.82 mi (97.88 km) |
| Srem to Oswiecim | 171.02 mi (275.23 km) |
| Srem to Otwock | 180.44 mi (290.39 km) |
| Srem to Ozarow Mazowiecki | 160.70 mi (258.61 km) |
| Srem to Ozimek | 110.61 mi (178.01 km) |
| Srem to Ozorkow | 96.81 mi (155.79 km) |
| Srem to Pabianice | 105.49 mi (169.77 km) |
