| Ilmenau to Orzesze | 346.55 mi (557.72 km) |
| Ilmenau to Osowa | 408.91 mi (658.08 km) |
| Ilmenau to Ostroda | 435.75 mi (701.27 km) |
| Ilmenau to Ostroleka | 482.53 mi (776.56 km) |
| Ilmenau to Ostrow Mazowiecka | 491.44 mi (790.89 km) |
| Ilmenau to Ostrow Wielkopolski | 306.05 mi (492.53 km) |
| Ilmenau to Ostrowiec Swietokrzyski | 457.53 mi (736.33 km) |
| Ilmenau to Ostrzeszow | 308.70 mi (496.80 km) |
| Ilmenau to Oswiecim | 368.45 mi (592.96 km) |
| Ilmenau to Otwock | 456.45 mi (734.59 km) |
| Ilmenau to Ozarow Mazowiecki | 438.04 mi (704.96 km) |
| Ilmenau to Ozimek | 319.21 mi (513.72 km) |
| Ilmenau to Ozorkow | 371.61 mi (598.05 km) |
| Ilmenau to Pabianice | 372.50 mi (599.49 km) |
| Ilmenau to Parczew | 521.25 mi (838.88 km) |
