| Mountain Ash to Roy (Utah) | 4,730.36 mi (7,612.79 km) |
| Mountain Ash to Royal Kunia (Hawaii) | 7,158.91 mi (11,521.16 km) |
| Mountain Ash to Royal Oak (Michigan) | 3,614.84 mi (5,817.52 km) |
| Mountain Ash to Royal Palm Beach (Florida) | 4,242.60 mi (6,827.80 km) |
| Mountain Ash to Royse City (Texas) | 4,587.69 mi (7,383.17 km) |
| Mountain Ash to Ruskin (Florida) | 4,285.30 mi (6,896.53 km) |
| Mountain Ash to Russellville (Alabama) | 4,169.50 mi (6,710.16 km) |
| Mountain Ash to Russellville (Arkansas) | 4,347.35 mi (6,996.38 km) |
| Mountain Ash to Ruston (Louisiana) | 4,464.42 mi (7,184.79 km) |
| Mountain Ash to Rutherford (New Jersey) | 3,323.84 mi (5,349.21 km) |
| Mountain Ash to Rutland (Vermont) | 3,161.82 mi (5,088.46 km) |
| Mountain Ash to Sabana Grande (Puerto Rico) | 4,119.32 mi (6,629.41 km) |
| Mountain Ash to Sachse (Texas) | 4,598.12 mi (7,399.96 km) |
| Mountain Ash to Saco (Maine) | 3,062.08 mi (4,927.94 km) |
| Mountain Ash to Sacramento (California) | 5,173.57 mi (8,326.06 km) |
