| Mountain Ash to Scottsboro (Alabama) | 4,094.71 mi (6,589.79 km) |
| Mountain Ash to Scottsdale (Arizona) | 5,129.57 mi (8,255.24 km) |
| Mountain Ash to Scranton (Pennsylvania) | 3,362.75 mi (5,411.82 km) |
| Mountain Ash to Seabrook (Maryland) | 3,516.90 mi (5,659.91 km) |
| Mountain Ash to Seabrook (Texas) | 4,710.47 mi (7,580.77 km) |
| Mountain Ash to Seaford (New York) | 3,305.10 mi (5,319.04 km) |
| Mountain Ash to Seagoville (Texas) | 4,613.11 mi (7,424.08 km) |
| Mountain Ash to Seal Beach (California) | 5,337.93 mi (8,590.56 km) |
| Mountain Ash to Searcy (Arkansas) | 4,293.73 mi (6,910.10 km) |
| Mountain Ash to Seaside (California) | 5,295.45 mi (8,522.21 km) |
| Mountain Ash to SeaTac (Washington) | 4,696.00 mi (7,557.49 km) |
| Mountain Ash to Seattle (Washington) | 4,686.81 mi (7,542.70 km) |
| Mountain Ash to Sebastian (Florida) | 4,199.60 mi (6,758.60 km) |
| Mountain Ash to Sebring (Florida) | 4,255.92 mi (6,849.24 km) |
| Mountain Ash to Secaucus (New Jersey) | 3,323.89 mi (5,349.28 km) |
