| Mountain Ash to Reidsville (North Carolina) | 3,753.22 mi (6,040.23 km) |
| Mountain Ash to Reisterstown (Maryland) | 3,494.39 mi (5,623.68 km) |
| Mountain Ash to Rendon (Texas) | 4,643.87 mi (7,473.58 km) |
| Mountain Ash to Reno (Nevada) | 5,068.16 mi (8,156.42 km) |
| Mountain Ash to Renton (Washington) | 4,691.18 mi (7,549.72 km) |
| Mountain Ash to Republic (Missouri) | 4,267.09 mi (6,867.21 km) |
| Mountain Ash to Reston (Virginia) | 3,538.65 mi (5,694.90 km) |
| Mountain Ash to Revere (Massachusetts) | 3,129.47 mi (5,036.40 km) |
| Mountain Ash to Rexburg (Idaho) | 4,580.82 mi (7,372.12 km) |
| Mountain Ash to Reynoldsburg (Ohio) | 3,714.38 mi (5,977.72 km) |
| Mountain Ash to Rialto (California) | 5,294.80 mi (8,521.16 km) |
| Mountain Ash to Richardson (Texas) | 4,603.25 mi (7,408.22 km) |
| Mountain Ash to Richfield (Minnesota) | 3,892.46 mi (6,264.31 km) |
| Mountain Ash to Richfield (Wisconsin) | 3,779.19 mi (6,082.02 km) |
| Mountain Ash to Richland (Washington) | 4,676.22 mi (7,525.64 km) |
