| Lannion to Dixon (Illinois) | 3,981.35 mi (6,407.37 km) |
| Lannion to Dobbs Ferry (New York) | 3,364.44 mi (5,414.54 km) |
| Lannion to Doctor Phillips (Florida) | 4,244.27 mi (6,830.49 km) |
| Lannion to Dodge City (Kansas) | 4,586.35 mi (7,381.02 km) |
| Lannion to Dolton (Illinois) | 3,914.74 mi (6,300.17 km) |
| Lannion to Donna (Texas) | 5,079.51 mi (8,174.68 km) |
| Lannion to Dorado (Puerto Rico) | 4,035.58 mi (6,494.64 km) |
| Lannion to Doral (Florida) | 4,317.75 mi (6,948.75 km) |
| Lannion to Doraville (Georgia) | 4,115.02 mi (6,622.49 km) |
| Lannion to Dothan (Alabama) | 4,287.21 mi (6,899.60 km) |
| Lannion to Douglas (Arizona) | 5,278.79 mi (8,495.40 km) |
| Lannion to Douglas (Georgia) | 4,162.70 mi (6,699.21 km) |
| Lannion to Douglasville (Georgia) | 4,141.49 mi (6,665.08 km) |
| Lannion to Dover (Delaware) | 3,509.34 mi (5,647.74 km) |
| Lannion to Dover (New Hampshire) | 3,154.30 mi (5,076.36 km) |
