| Gretna to Butzbach | 5,008.99 mi (8,061.19 km) |
| Gretna to Buxtehude | 4,956.76 mi (7,977.13 km) |
| Gretna to Cadolzburg | 5,127.25 mi (8,251.52 km) |
| Gretna to Calbe | 5,083.38 mi (8,180.91 km) |
| Gretna to Calw | 5,064.53 mi (8,150.57 km) |
| Gretna to Castrop-Rauxel | 4,923.12 mi (7,923.00 km) |
| Gretna to Celle | 4,996.90 mi (8,041.74 km) |
| Gretna to Cham | 5,205.53 mi (8,377.49 km) |
| Gretna to Chemnitz | 5,161.79 mi (8,307.10 km) |
| Gretna to Clausthal-Zellerfeld | 5,031.89 mi (8,098.04 km) |
| Gretna to Cloppenburg | 4,913.55 mi (7,907.60 km) |
| Gretna to Coburg | 5,104.93 mi (8,215.59 km) |
| Gretna to Coesfeld | 4,905.75 mi (7,895.05 km) |
| Gretna to Cologne | 4,926.59 mi (7,928.58 km) |
| Gretna to Coswig | 5,177.06 mi (8,331.68 km) |
