| Llantwit Major to Storm Lake (Iowa) | 4,073.49 mi (6,555.65 km) |
| Llantwit Major to Storrs (Connecticut) | 3,207.35 mi (5,161.74 km) |
| Llantwit Major to Stoughton (Wisconsin) | 3,835.90 mi (6,173.29 km) |
| Llantwit Major to Stow (Ohio) | 3,608.57 mi (5,807.44 km) |
| Llantwit Major to Streamwood (Illinois) | 3,836.73 mi (6,174.62 km) |
| Llantwit Major to Streator (Illinois) | 3,902.98 mi (6,281.24 km) |
| Llantwit Major to Streetsboro (Ohio) | 3,602.24 mi (5,797.25 km) |
| Llantwit Major to Strongsville (Ohio) | 3,618.49 mi (5,823.40 km) |
| Llantwit Major to Stuart (Florida) | 4,217.46 mi (6,787.35 km) |
| Llantwit Major to Stuarts Draft (Virginia) | 3,651.41 mi (5,876.37 km) |
| Llantwit Major to Sturgis (Michigan) | 3,739.18 mi (6,017.64 km) |
| Llantwit Major to Suamico (Wisconsin) | 3,715.46 mi (5,979.46 km) |
| Llantwit Major to Sudley (Virginia) | 3,553.48 mi (5,718.78 km) |
| Llantwit Major to Suffern (New York) | 3,314.38 mi (5,333.98 km) |
| Llantwit Major to Suffolk (Virginia) | 3,611.69 mi (5,812.45 km) |
