| Crystal to Opole | 4,655.41 mi (7,492.16 km) |
| Crystal to Orzesze | 4,706.09 mi (7,573.71 km) |
| Crystal to Osowa | 4,490.90 mi (7,227.40 km) |
| Crystal to Ostroda | 4,569.41 mi (7,353.75 km) |
| Crystal to Ostroleka | 4,646.86 mi (7,478.40 km) |
| Crystal to Ostrow Mazowiecka | 4,669.76 mi (7,515.26 km) |
| Crystal to Ostrow Wielkopolski | 4,604.35 mi (7,409.99 km) |
| Crystal to Ostrowiec Swietokrzyski | 4,748.41 mi (7,641.83 km) |
| Crystal to Ostrzeszow | 4,619.17 mi (7,433.83 km) |
| Crystal to Oswiecim | 4,726.28 mi (7,606.21 km) |
| Crystal to Otwock | 4,685.36 mi (7,540.36 km) |
| Crystal to Ozarow Mazowiecki | 4,666.64 mi (7,510.22 km) |
| Crystal to Ozimek | 4,663.83 mi (7,505.71 km) |
| Crystal to Ozorkow | 4,633.66 mi (7,457.16 km) |
| Crystal to Pabianice | 4,652.15 mi (7,486.92 km) |
