| Helena to Coswig | 4,880.13 mi (7,853.81 km) |
| Helena to Cottbus | 4,935.04 mi (7,942.18 km) |
| Helena to Crailsheim | 4,968.14 mi (7,995.45 km) |
| Helena to Cremlingen | 4,814.09 mi (7,747.53 km) |
| Helena to Crimmitschau | 4,937.87 mi (7,946.73 km) |
| Helena to Cuxhaven | 4,676.30 mi (7,525.78 km) |
| Helena to Dachau | 5,053.88 mi (8,133.43 km) |
| Helena to Dallgow-Doberitz | 4,859.82 mi (7,821.12 km) |
| Helena to Damme | 4,734.49 mi (7,619.42 km) |
| Helena to Darmstadt | 4,888.74 mi (7,867.67 km) |
| Helena to Dassel | 4,812.83 mi (7,745.51 km) |
| Helena to Datteln | 4,757.22 mi (7,656.01 km) |
| Helena to Dautphe | 4,832.87 mi (7,777.75 km) |
| Helena to Deggendorf | 5,063.61 mi (8,149.10 km) |
| Helena to Delbruck | 4,784.64 mi (7,700.14 km) |
