| Mountain Ash to Robertsville (New Jersey) | 3,352.20 mi (5,394.85 km) |
| Mountain Ash to Robinson (Texas) | 4,697.32 mi (7,559.61 km) |
| Mountain Ash to Robstown (Texas) | 4,908.79 mi (7,899.93 km) |
| Mountain Ash to Rochester (Michigan) | 3,605.67 mi (5,802.76 km) |
| Mountain Ash to Rochester (Minnesota) | 3,902.63 mi (6,280.68 km) |
| Mountain Ash to Rochester (New Hampshire) | 3,092.81 mi (4,977.40 km) |
| Mountain Ash to Rochester (New York) | 3,366.91 mi (5,418.52 km) |
| Mountain Ash to Rochester Hills (Michigan) | 3,608.07 mi (5,806.63 km) |
| Mountain Ash to Rock Hill (South Carolina) | 3,874.39 mi (6,235.23 km) |
| Mountain Ash to Rock Island (Illinois) | 3,949.66 mi (6,356.37 km) |
| Mountain Ash to Rock Springs (Wyoming) | 4,614.04 mi (7,425.58 km) |
| Mountain Ash to Rockford (Illinois) | 3,855.10 mi (6,204.18 km) |
| Mountain Ash to Rockledge (Florida) | 4,183.57 mi (6,732.80 km) |
| Mountain Ash to Rocklin (California) | 5,153.21 mi (8,293.29 km) |
| Mountain Ash to Rockport (Texas) | 4,872.64 mi (7,841.76 km) |
