| Pontneddfechan to Storm Lake (Iowa) | 4,056.99 mi (6,529.09 km) |
| Pontneddfechan to Storrs (Connecticut) | 3,195.96 mi (5,143.39 km) |
| Pontneddfechan to Stoughton (Wisconsin) | 3,820.47 mi (6,148.45 km) |
| Pontneddfechan to Stow (Ohio) | 3,595.33 mi (5,786.13 km) |
| Pontneddfechan to Streamwood (Illinois) | 3,821.78 mi (6,150.56 km) |
| Pontneddfechan to Streator (Illinois) | 3,888.17 mi (6,257.41 km) |
| Pontneddfechan to Streetsboro (Ohio) | 3,589.00 mi (5,775.93 km) |
| Pontneddfechan to Strongsville (Ohio) | 3,605.12 mi (5,801.88 km) |
| Pontneddfechan to Stuart (Florida) | 4,209.25 mi (6,774.13 km) |
| Pontneddfechan to Stuarts Draft (Virginia) | 3,639.85 mi (5,857.78 km) |
| Pontneddfechan to Sturgis (Michigan) | 3,724.87 mi (5,994.61 km) |
| Pontneddfechan to Suamico (Wisconsin) | 3,699.72 mi (5,954.12 km) |
| Pontneddfechan to Sudley (Virginia) | 3,542.02 mi (5,700.33 km) |
| Pontneddfechan to Suffern (New York) | 3,302.82 mi (5,315.38 km) |
| Pontneddfechan to Suffolk (Virginia) | 3,601.22 mi (5,795.60 km) |
