| Giessen to Orzesze | 445.06 mi (716.26 km) |
| Giessen to Osowa | 489.79 mi (788.25 km) |
| Giessen to Ostroda | 524.56 mi (844.20 km) |
| Giessen to Ostroleka | 576.06 mi (927.08 km) |
| Giessen to Ostrow Mazowiecka | 586.17 mi (943.35 km) |
| Giessen to Ostrow Wielkopolski | 403.34 mi (649.12 km) |
| Giessen to Ostrowiec Swietokrzyski | 556.38 mi (895.41 km) |
| Giessen to Ostrzeszow | 406.74 mi (654.58 km) |
| Giessen to Oswiecim | 466.84 mi (751.31 km) |
| Giessen to Otwock | 553.21 mi (890.30 km) |
| Giessen to Ozarow Mazowiecki | 534.37 mi (859.99 km) |
| Giessen to Ozimek | 418.17 mi (672.98 km) |
| Giessen to Ozorkow | 468.28 mi (753.63 km) |
| Giessen to Pabianice | 470.17 mi (756.66 km) |
| Giessen to Parczew | 619.26 mi (996.60 km) |
