| Mountain Ash to Somersworth (New Hampshire) | 3,090.83 mi (4,974.21 km) |
| Mountain Ash to Somerton (Arizona) | 5,288.26 mi (8,510.64 km) |
| Mountain Ash to Somerville (Massachusetts) | 3,134.63 mi (5,044.70 km) |
| Mountain Ash to Somerville (New Jersey) | 3,355.28 mi (5,399.80 km) |
| Mountain Ash to Sonoma (California) | 5,219.63 mi (8,400.18 km) |
| Mountain Ash to Soquel (California) | 5,277.95 mi (8,494.04 km) |
| Mountain Ash to South Bend (Indiana) | 3,773.85 mi (6,073.42 km) |
| Mountain Ash to South Bradenton (Florida) | 4,304.39 mi (6,927.25 km) |
| Mountain Ash to South Burlington (Vermont) | 3,137.39 mi (5,049.15 km) |
| Mountain Ash to South Charleston (West Virginia) | 3,744.48 mi (6,026.16 km) |
| Mountain Ash to South Daytona (Florida) | 4,153.04 mi (6,683.66 km) |
| Mountain Ash to South El Monte (California) | 5,320.52 mi (8,562.56 km) |
| Mountain Ash to South Elgin (Illinois) | 3,838.65 mi (6,177.71 km) |
| Mountain Ash to South Euclid (Ohio) | 3,593.75 mi (5,783.58 km) |
| Mountain Ash to South Farmingdale (New York) | 3,301.13 mi (5,312.65 km) |
