| Groningen to Orzesze | 562.39 mi (905.08 km) |
| Groningen to Osowa | 492.05 mi (791.87 km) |
| Groningen to Ostroda | 551.45 mi (887.47 km) |
| Groningen to Ostroleka | 620.62 mi (998.79 km) |
| Groningen to Ostrow Mazowiecka | 636.88 mi (1,024.96 km) |
| Groningen to Ostrow Wielkopolski | 485.56 mi (781.43 km) |
| Groningen to Ostrowiec Swietokrzyski | 648.07 mi (1,042.98 km) |
| Groningen to Ostrzeszow | 495.34 mi (797.17 km) |
| Groningen to Oswiecim | 584.52 mi (940.70 km) |
| Groningen to Otwock | 619.51 mi (997.00 km) |
| Groningen to Ozarow Mazowiecki | 598.70 mi (963.51 km) |
| Groningen to Ozimek | 525.51 mi (845.73 km) |
| Groningen to Ozorkow | 539.96 mi (868.97 km) |
| Groningen to Pabianice | 549.85 mi (884.90 km) |
| Groningen to Parczew | 693.86 mi (1,116.66 km) |
