| Ilmenau to Novi di Modena | 400.09 mi (643.88 km) |
| Ilmenau to Novi Ligure | 421.15 mi (677.78 km) |
| Ilmenau to Nuoro | 720.36 mi (1,159.31 km) |
| Ilmenau to Occhiobello | 399.31 mi (642.63 km) |
| Ilmenau to Oderzo | 346.40 mi (557.48 km) |
| Ilmenau to Oggiono | 346.19 mi (557.15 km) |
| Ilmenau to Olbia | 678.27 mi (1,091.57 km) |
| Ilmenau to Oleggio | 366.69 mi (590.13 km) |
| Ilmenau to Olgiate Comasco | 350.29 mi (563.73 km) |
| Ilmenau to Olgiate Olona | 361.32 mi (581.49 km) |
| Ilmenau to Omegna | 351.52 mi (565.71 km) |
| Ilmenau to Opera | 374.56 mi (602.80 km) |
| Ilmenau to Oppeano | 372.19 mi (598.98 km) |
| Ilmenau to Orbassano | 422.30 mi (679.62 km) |
| Ilmenau to Orbetello | 569.81 mi (917.02 km) |
