| Bad Harzburg to Buxtehude | 116.01 mi (186.70 km) |
| Bad Harzburg to Cadolzburg | 168.50 mi (271.18 km) |
| Bad Harzburg to Calbe | 51.77 mi (83.32 km) |
| Bad Harzburg to Calw | 233.04 mi (375.05 km) |
| Bad Harzburg to Castrop-Rauxel | 140.79 mi (226.58 km) |
| Bad Harzburg to Celle | 55.30 mi (88.99 km) |
| Bad Harzburg to Cham | 205.63 mi (330.93 km) |
| Bad Harzburg to Chemnitz | 124.73 mi (200.74 km) |
| Bad Harzburg to Clausthal-Zellerfeld | 11.01 mi (17.72 km) |
| Bad Harzburg to Cloppenburg | 125.35 mi (201.73 km) |
| Bad Harzburg to Coburg | 112.92 mi (181.72 km) |
| Bad Harzburg to Coesfeld | 144.78 mi (232.99 km) |
| Bad Harzburg to Cologne | 168.67 mi (271.45 km) |
| Bad Harzburg to Coswig | 139.81 mi (224.99 km) |
| Bad Harzburg to Coswig | 79.80 mi (128.43 km) |
