| Castellana Grotte to Orzesze | 644.80 mi (1,037.70 km) |
| Castellana Grotte to Osowa | 937.72 mi (1,509.11 km) |
| Castellana Grotte to Ostroda | 895.03 mi (1,440.42 km) |
| Castellana Grotte to Ostroleka | 866.55 mi (1,394.58 km) |
| Castellana Grotte to Ostrow Mazowiecka | 852.74 mi (1,372.34 km) |
| Castellana Grotte to Ostrow Wielkopolski | 744.50 mi (1,198.16 km) |
| Castellana Grotte to Ostrowiec Swietokrzyski | 723.28 mi (1,164.01 km) |
| Castellana Grotte to Ostrzeszow | 728.70 mi (1,172.73 km) |
| Castellana Grotte to Oswiecim | 640.26 mi (1,030.39 km) |
| Castellana Grotte to Otwock | 799.94 mi (1,287.38 km) |
| Castellana Grotte to Ozarow Mazowiecki | 801.60 mi (1,290.05 km) |
| Castellana Grotte to Ozimek | 678.27 mi (1,091.57 km) |
| Castellana Grotte to Ozorkow | 772.31 mi (1,242.91 km) |
| Castellana Grotte to Pabianice | 751.31 mi (1,209.11 km) |
| Castellana Grotte to Parczew | 790.48 mi (1,272.16 km) |
