| Ilmenau to Butzbach | 100.53 mi (161.79 km) |
| Ilmenau to Buxtehude | 199.78 mi (321.52 km) |
| Ilmenau to Cadolzburg | 85.29 mi (137.25 km) |
| Ilmenau to Calbe | 92.02 mi (148.09 km) |
| Ilmenau to Calw | 167.37 mi (269.36 km) |
| Ilmenau to Castrop-Rauxel | 167.30 mi (269.25 km) |
| Ilmenau to Celle | 138.87 mi (223.49 km) |
| Ilmenau to Cham | 127.26 mi (204.80 km) |
| Ilmenau to Chemnitz | 87.90 mi (141.47 km) |
| Ilmenau to Clausthal-Zellerfeld | 81.47 mi (131.12 km) |
| Ilmenau to Cloppenburg | 193.49 mi (311.40 km) |
| Ilmenau to Coburg | 28.90 mi (46.51 km) |
| Ilmenau to Coesfeld | 184.13 mi (296.33 km) |
| Ilmenau to Cologne | 174.03 mi (280.08 km) |
| Ilmenau to Coswig | 120.13 mi (193.34 km) |
