| Llanelli to Southern Pines (North Carolina) | 3,762.84 mi (6,055.71 km) |
| Llanelli to Southfield (Michigan) | 3,589.53 mi (5,776.79 km) |
| Llanelli to Southgate (Michigan) | 3,599.30 mi (5,792.51 km) |
| Llanelli to Southlake (Texas) | 4,590.64 mi (7,387.92 km) |
| Llanelli to Spanaway (Washington) | 4,697.10 mi (7,559.25 km) |
| Llanelli to Spanish Fork (Utah) | 4,747.45 mi (7,640.29 km) |
| Llanelli to Spanish Lake (Missouri) | 4,031.05 mi (6,487.34 km) |
| Llanelli to Spanish Springs (Nevada) | 5,032.17 mi (8,098.50 km) |
| Llanelli to Sparks (Nevada) | 5,038.29 mi (8,108.34 km) |
| Llanelli to Spartanburg (South Carolina) | 3,879.06 mi (6,242.74 km) |
| Llanelli to Spearfish (South Dakota) | 4,255.86 mi (6,849.14 km) |
| Llanelli to Speedway (Indiana) | 3,828.15 mi (6,160.82 km) |
| Llanelli to Spencer (Iowa) | 4,012.88 mi (6,458.10 km) |
| Llanelli to Spokane (Washington) | 4,524.00 mi (7,280.68 km) |
| Llanelli to Spokane Valley (Washington) | 4,518.46 mi (7,271.76 km) |
