| Duncan to Butzbach | 5,064.53 mi (8,150.57 km) |
| Duncan to Buxtehude | 4,982.16 mi (8,018.01 km) |
| Duncan to Cadolzburg | 5,183.92 mi (8,342.71 km) |
| Duncan to Calbe | 5,115.91 mi (8,233.26 km) |
| Duncan to Calw | 5,134.84 mi (8,263.72 km) |
| Duncan to Castrop-Rauxel | 4,973.07 mi (8,003.38 km) |
| Duncan to Celle | 5,028.64 mi (8,092.81 km) |
| Duncan to Cham | 5,257.87 mi (8,461.73 km) |
| Duncan to Chemnitz | 5,199.57 mi (8,367.90 km) |
| Duncan to Clausthal-Zellerfeld | 5,070.00 mi (8,159.38 km) |
| Duncan to Cloppenburg | 4,949.59 mi (7,965.59 km) |
| Duncan to Coburg | 5,154.25 mi (8,294.97 km) |
| Duncan to Coesfeld | 4,952.56 mi (7,970.38 km) |
| Duncan to Cologne | 4,983.16 mi (8,019.62 km) |
| Duncan to Coswig | 5,209.99 mi (8,384.67 km) |
