| Grande-Synthe to Orzesze | 722.53 mi (1,162.80 km) |
| Grande-Synthe to Osowa | 714.62 mi (1,150.08 km) |
| Grande-Synthe to Ostroda | 765.94 mi (1,232.66 km) |
| Grande-Synthe to Ostroleka | 828.28 mi (1,332.99 km) |
| Grande-Synthe to Ostrow Mazowiecka | 841.72 mi (1,354.63 km) |
| Grande-Synthe to Ostrow Wielkopolski | 669.90 mi (1,078.10 km) |
| Grande-Synthe to Ostrowiec Swietokrzyski | 828.54 mi (1,333.41 km) |
| Grande-Synthe to Ostrzeszow | 675.77 mi (1,087.55 km) |
| Grande-Synthe to Oswiecim | 744.54 mi (1,198.22 km) |
| Grande-Synthe to Otwock | 815.70 mi (1,312.75 km) |
| Grande-Synthe to Ozarow Mazowiecki | 795.72 mi (1,280.59 km) |
| Grande-Synthe to Ozimek | 693.19 mi (1,115.58 km) |
| Grande-Synthe to Ozorkow | 731.79 mi (1,177.70 km) |
| Grande-Synthe to Pabianice | 736.99 mi (1,186.06 km) |
| Grande-Synthe to Parczew | 886.00 mi (1,425.88 km) |
