| Illingen to Butzbach | 102.45 mi (164.88 km) |
| Illingen to Buxtehude | 305.38 mi (491.46 km) |
| Illingen to Cadolzburg | 171.51 mi (276.02 km) |
| Illingen to Calbe | 270.68 mi (435.61 km) |
| Illingen to Calw | 88.72 mi (142.78 km) |
| Illingen to Castrop-Rauxel | 150.63 mi (242.42 km) |
| Illingen to Celle | 260.25 mi (418.83 km) |
| Illingen to Cham | 252.40 mi (406.20 km) |
| Illingen to Chemnitz | 278.59 mi (448.35 km) |
| Illingen to Clausthal-Zellerfeld | 221.08 mi (355.79 km) |
| Illingen to Cloppenburg | 243.86 mi (392.46 km) |
| Illingen to Coburg | 184.98 mi (297.70 km) |
| Illingen to Coesfeld | 177.89 mi (286.28 km) |
| Illingen to Cologne | 107.88 mi (173.61 km) |
| Illingen to Coswig | 312.86 mi (503.51 km) |
