| Llantwit Major to Scottsboro (Alabama) | 4,096.79 mi (6,593.15 km) |
| Llantwit Major to Scottsdale (Arizona) | 5,137.08 mi (8,267.32 km) |
| Llantwit Major to Scranton (Pennsylvania) | 3,364.71 mi (5,414.98 km) |
| Llantwit Major to Seabrook (Maryland) | 3,518.28 mi (5,662.13 km) |
| Llantwit Major to Seabrook (Texas) | 4,713.29 mi (7,585.31 km) |
| Llantwit Major to Seaford (New York) | 3,306.34 mi (5,321.04 km) |
| Llantwit Major to Seagoville (Texas) | 4,617.02 mi (7,430.38 km) |
| Llantwit Major to Seal Beach (California) | 5,346.76 mi (8,604.79 km) |
| Llantwit Major to Searcy (Arkansas) | 4,297.24 mi (6,915.75 km) |
| Llantwit Major to Seaside (California) | 5,305.55 mi (8,538.46 km) |
| Llantwit Major to SeaTac (Washington) | 4,708.01 mi (7,576.81 km) |
| Llantwit Major to Seattle (Washington) | 4,698.85 mi (7,562.07 km) |
| Llantwit Major to Sebastian (Florida) | 4,198.47 mi (6,756.78 km) |
| Llantwit Major to Sebring (Florida) | 4,254.95 mi (6,847.68 km) |
| Llantwit Major to Secaucus (New Jersey) | 3,325.29 mi (5,351.54 km) |
