| Gengenbach to Orzesze | 498.23 mi (801.83 km) |
| Gengenbach to Osowa | 612.34 mi (985.46 km) |
| Gengenbach to Ostroda | 633.91 mi (1,020.18 km) |
| Gengenbach to Ostroleka | 673.09 mi (1,083.23 km) |
| Gengenbach to Ostrow Mazowiecka | 679.01 mi (1,092.77 km) |
| Gengenbach to Ostrow Wielkopolski | 488.97 mi (786.93 km) |
| Gengenbach to Ostrowiec Swietokrzyski | 622.56 mi (1,001.92 km) |
| Gengenbach to Ostrzeszow | 487.48 mi (784.52 km) |
| Gengenbach to Oswiecim | 517.64 mi (833.06 km) |
| Gengenbach to Otwock | 637.94 mi (1,026.67 km) |
| Gengenbach to Ozarow Mazowiecki | 621.55 mi (1,000.29 km) |
| Gengenbach to Ozimek | 482.94 mi (777.22 km) |
| Gengenbach to Ozorkow | 555.25 mi (893.58 km) |
| Gengenbach to Pabianice | 551.50 mi (887.55 km) |
| Gengenbach to Parczew | 694.65 mi (1,117.93 km) |
