| Lannion to Superior (Colorado) | 4,675.76 mi (7,524.91 km) |
| Lannion to Superior (Wisconsin) | 3,875.83 mi (6,237.55 km) |
| Lannion to Surprise (Arizona) | 5,266.33 mi (8,475.34 km) |
| Lannion to Susanville (California) | 5,184.70 mi (8,343.97 km) |
| Lannion to Sussex (Wisconsin) | 3,875.86 mi (6,237.59 km) |
| Lannion to Suwanee (Georgia) | 4,099.76 mi (6,597.93 km) |
| Lannion to Swansea (Illinois) | 4,147.23 mi (6,674.32 km) |
| Lannion to Sweetwater (Florida) | 4,320.38 mi (6,952.98 km) |
| Lannion to Sweetwater (Texas) | 4,861.27 mi (7,823.45 km) |
| Lannion to Sycamore (Illinois) | 3,942.79 mi (6,345.30 km) |
| Lannion to Sylacauga (Alabama) | 4,234.31 mi (6,814.47 km) |
| Lannion to Sylvania (Ohio) | 3,752.15 mi (6,038.50 km) |
| Lannion to Syosset (New York) | 3,356.21 mi (5,401.30 km) |
| Lannion to Syracuse (New York) | 3,383.50 mi (5,445.22 km) |
| Lannion to Syracuse (Utah) | 4,864.88 mi (7,829.26 km) |
