| Llanelli to Somersworth (New Hampshire) | 3,058.63 mi (4,922.39 km) |
| Llanelli to Somerton (Arizona) | 5,260.97 mi (8,466.71 km) |
| Llanelli to Somerville (Massachusetts) | 3,102.29 mi (4,992.66 km) |
| Llanelli to Somerville (New Jersey) | 3,322.98 mi (5,347.81 km) |
| Llanelli to Sonoma (California) | 5,195.61 mi (8,361.53 km) |
| Llanelli to Soquel (California) | 5,253.48 mi (8,454.67 km) |
| Llanelli to South Bend (Indiana) | 3,743.19 mi (6,024.08 km) |
| Llanelli to South Bradenton (Florida) | 4,271.28 mi (6,873.96 km) |
| Llanelli to South Burlington (Vermont) | 3,105.70 mi (4,998.14 km) |
| Llanelli to South Charleston (West Virginia) | 3,712.57 mi (5,974.81 km) |
| Llanelli to South Daytona (Florida) | 4,119.94 mi (6,630.40 km) |
| Llanelli to South El Monte (California) | 5,294.36 mi (8,520.46 km) |
| Llanelli to South Elgin (Illinois) | 3,808.37 mi (6,128.98 km) |
| Llanelli to South Euclid (Ohio) | 3,562.41 mi (5,733.15 km) |
| Llanelli to South Farmingdale (New York) | 3,268.73 mi (5,260.51 km) |
