| Llantwit Major to Stephenville (Texas) | 4,705.21 mi (7,572.31 km) |
| Llantwit Major to Sterling (Colorado) | 4,463.45 mi (7,183.23 km) |
| Llantwit Major to Sterling (Illinois) | 3,905.36 mi (6,285.07 km) |
| Llantwit Major to Sterling (Virginia) | 3,540.10 mi (5,697.24 km) |
| Llantwit Major to Sterling Heights (Michigan) | 3,610.65 mi (5,810.78 km) |
| Llantwit Major to Steubenville (Ohio) | 3,612.77 mi (5,814.19 km) |
| Llantwit Major to Stevens Point (Wisconsin) | 3,776.32 mi (6,077.39 km) |
| Llantwit Major to Stevenson Ranch (California) | 5,328.19 mi (8,574.89 km) |
| Llantwit Major to Stillwater (Minnesota) | 3,874.11 mi (6,234.78 km) |
| Llantwit Major to Stillwater (Oklahoma) | 4,462.13 mi (7,181.11 km) |
| Llantwit Major to Stockbridge (Georgia) | 4,075.64 mi (6,559.11 km) |
| Llantwit Major to Stockton (California) | 5,212.62 mi (8,388.90 km) |
| Llantwit Major to Stone Ridge (Virginia) | 3,549.67 mi (5,712.64 km) |
| Llantwit Major to Stonecrest (Georgia) | 4,064.19 mi (6,540.69 km) |
| Llantwit Major to Stony Brook (New York) | 3,281.19 mi (5,280.56 km) |
