| Llanelli to Stephenville (Texas) | 4,670.36 mi (7,516.22 km) |
| Llanelli to Sterling (Colorado) | 4,428.21 mi (7,126.51 km) |
| Llanelli to Sterling (Illinois) | 3,870.33 mi (6,228.70 km) |
| Llanelli to Sterling (Virginia) | 3,506.32 mi (5,642.88 km) |
| Llanelli to Sterling Heights (Michigan) | 3,575.90 mi (5,754.85 km) |
| Llanelli to Steubenville (Ohio) | 3,578.46 mi (5,758.97 km) |
| Llanelli to Stevens Point (Wisconsin) | 3,741.15 mi (6,020.81 km) |
| Llanelli to Stevenson Ranch (California) | 5,293.18 mi (8,518.56 km) |
| Llanelli to Stillwater (Minnesota) | 3,838.88 mi (6,178.08 km) |
| Llanelli to Stillwater (Oklahoma) | 4,427.11 mi (7,124.75 km) |
| Llanelli to Stockbridge (Georgia) | 4,041.94 mi (6,504.88 km) |
| Llanelli to Stockton (California) | 5,177.98 mi (8,333.16 km) |
| Llanelli to Stone Ridge (Virginia) | 3,515.89 mi (5,658.27 km) |
| Llanelli to Stonecrest (Georgia) | 4,030.49 mi (6,486.44 km) |
| Llanelli to Stony Brook (New York) | 3,247.54 mi (5,226.41 km) |
