| Llantwit Major to Sugar Hill (Georgia) | 4,040.53 mi (6,502.60 km) |
| Llantwit Major to Sugar Land (Texas) | 4,737.02 mi (7,623.50 km) |
| Llantwit Major to Sugarland Run (Virginia) | 3,537.78 mi (5,693.50 km) |
| Llantwit Major to Sugarmill Woods (Florida) | 4,237.22 mi (6,819.15 km) |
| Llantwit Major to Suisun City (California) | 5,218.78 mi (8,398.81 km) |
| Llantwit Major to Suitland (Maryland) | 3,527.05 mi (5,676.24 km) |
| Llantwit Major to Sulphur (Louisiana) | 4,612.58 mi (7,423.22 km) |
| Llantwit Major to Sulphur Springs (Texas) | 4,555.42 mi (7,331.24 km) |
| Llantwit Major to Summerfield (Maryland) | 3,522.36 mi (5,668.69 km) |
| Llantwit Major to Summerfield (North Carolina) | 3,770.27 mi (6,067.66 km) |
| Llantwit Major to Summerlin South (Nevada) | 5,122.99 mi (8,244.65 km) |
| Llantwit Major to Summerville (South Carolina) | 3,931.85 mi (6,327.70 km) |
| Llantwit Major to Summit (Illinois) | 3,833.25 mi (6,169.02 km) |
| Llantwit Major to Summit (New Jersey) | 3,340.42 mi (5,375.89 km) |
| Llantwit Major to Sumner (Washington) | 4,718.82 mi (7,594.20 km) |
