| Mountain Ash to River Ridge (Louisiana) | 4,496.35 mi (7,236.18 km) |
| Mountain Ash to Riverbank (California) | 5,205.27 mi (8,377.07 km) |
| Mountain Ash to Riverdale (Georgia) | 4,079.86 mi (6,565.90 km) |
| Mountain Ash to Riverdale (Illinois) | 3,828.40 mi (6,161.21 km) |
| Mountain Ash to Riverside (California) | 5,305.07 mi (8,537.69 km) |
| Mountain Ash to Riverside (Ohio) | 3,775.36 mi (6,075.86 km) |
| Mountain Ash to Riverton (Utah) | 4,762.62 mi (7,664.70 km) |
| Mountain Ash to Riverton (Wyoming) | 4,511.44 mi (7,260.47 km) |
| Mountain Ash to Riverview (Florida) | 4,274.49 mi (6,879.12 km) |
| Mountain Ash to Riverview (Michigan) | 3,631.26 mi (5,843.95 km) |
| Mountain Ash to Riviera Beach (Florida) | 4,232.34 mi (6,811.30 km) |
| Mountain Ash to Riviera Beach (Maryland) | 3,495.48 mi (5,625.43 km) |
| Mountain Ash to Roanoke (Virginia) | 3,721.56 mi (5,989.27 km) |
| Mountain Ash to Roanoke Rapids (North Carolina) | 3,664.50 mi (5,897.44 km) |
| Mountain Ash to Robbinsdale (Minnesota) | 3,887.39 mi (6,256.15 km) |
