| Llantrisant to Stephenville (Texas) | 4,705.21 mi (7,572.30 km) |
| Llantrisant to Sterling (Colorado) | 4,461.76 mi (7,180.50 km) |
| Llantrisant to Sterling (Illinois) | 3,904.96 mi (6,284.42 km) |
| Llantrisant to Sterling (Virginia) | 3,541.52 mi (5,699.53 km) |
| Llantrisant to Sterling Heights (Michigan) | 3,610.83 mi (5,811.06 km) |
| Llantrisant to Steubenville (Ohio) | 3,613.59 mi (5,815.52 km) |
| Llantrisant to Stevens Point (Wisconsin) | 3,775.48 mi (6,076.05 km) |
| Llantrisant to Stevenson Ranch (California) | 5,325.46 mi (8,570.50 km) |
| Llantrisant to Stillwater (Minnesota) | 3,872.85 mi (6,232.76 km) |
| Llantrisant to Stillwater (Oklahoma) | 4,461.74 mi (7,180.48 km) |
| Llantrisant to Stockbridge (Georgia) | 4,077.15 mi (6,561.53 km) |
| Llantrisant to Stockton (California) | 5,209.21 mi (8,383.41 km) |
| Llantrisant to Stone Ridge (Virginia) | 3,551.09 mi (5,714.93 km) |
| Llantrisant to Stonecrest (Georgia) | 4,065.69 mi (6,543.09 km) |
| Llantrisant to Stony Brook (New York) | 3,282.74 mi (5,283.07 km) |
