| Llanelli to Storm Lake (Iowa) | 4,038.28 mi (6,498.98 km) |
| Llanelli to Storrs (Connecticut) | 3,173.63 mi (5,107.46 km) |
| Llanelli to Stoughton (Wisconsin) | 3,800.83 mi (6,116.84 km) |
| Llanelli to Stow (Ohio) | 3,574.09 mi (5,751.94 km) |
| Llanelli to Streamwood (Illinois) | 3,801.75 mi (6,118.33 km) |
| Llanelli to Streator (Illinois) | 3,868.04 mi (6,225.00 km) |
| Llanelli to Streetsboro (Ohio) | 3,567.75 mi (5,741.75 km) |
| Llanelli to Strongsville (Ohio) | 3,583.96 mi (5,767.83 km) |
| Llanelli to Stuart (Florida) | 4,185.53 mi (6,735.96 km) |
| Llanelli to Stuarts Draft (Virginia) | 3,617.61 mi (5,821.98 km) |
| Llanelli to Sturgis (Michigan) | 3,704.37 mi (5,961.60 km) |
| Llanelli to Suamico (Wisconsin) | 3,680.34 mi (5,922.93 km) |
| Llanelli to Sudley (Virginia) | 3,519.73 mi (5,664.46 km) |
| Llanelli to Suffern (New York) | 3,280.58 mi (5,279.59 km) |
| Llanelli to Suffolk (Virginia) | 3,578.43 mi (5,758.92 km) |
