| Mountain Ash to Yonkers (New York) | 3,308.66 mi (5,324.77 km) |
| Mountain Ash to Yorba Linda (California) | 5,320.37 mi (8,562.30 km) |
| Mountain Ash to York (Pennsylvania) | 3,468.58 mi (5,582.13 km) |
| Mountain Ash to Yorktown (Indiana) | 3,812.24 mi (6,135.21 km) |
| Mountain Ash to Yorkville (Illinois) | 3,859.27 mi (6,210.90 km) |
| Mountain Ash to Youngstown (Ohio) | 3,577.38 mi (5,757.24 km) |
| Mountain Ash to Youngsville (Louisiana) | 4,561.74 mi (7,341.42 km) |
| Mountain Ash to Ypsilanti (Michigan) | 3,644.84 mi (5,865.81 km) |
| Mountain Ash to Yuba City (California) | 5,146.42 mi (8,282.36 km) |
| Mountain Ash to Yucaipa (California) | 5,287.95 mi (8,510.14 km) |
| Mountain Ash to Yucca Valley (California) | 5,262.10 mi (8,468.53 km) |
| Mountain Ash to Yukon (Oklahoma) | 4,514.49 mi (7,265.38 km) |
| Mountain Ash to Yulee (Florida) | 4,104.35 mi (6,605.32 km) |
| Mountain Ash to Yuma (Arizona) | 5,283.13 mi (8,502.38 km) |
| Mountain Ash to Zachary (Louisiana) | 4,499.18 mi (7,240.73 km) |
