| Mountain Ash to Ridgeland (Mississippi) | 4,369.84 mi (7,032.58 km) |
| Mountain Ash to Ridgewood (New Jersey) | 3,317.23 mi (5,338.57 km) |
| Mountain Ash to Rifle (Colorado) | 4,672.87 mi (7,520.26 km) |
| Mountain Ash to Rincon (Georgia) | 4,009.67 mi (6,452.93 km) |
| Mountain Ash to Ringwood (New Jersey) | 3,318.60 mi (5,340.77 km) |
| Mountain Ash to Río Grande (Puerto Rico) | 4,056.14 mi (6,527.73 km) |
| Mountain Ash to Rio Grande City (Texas) | 5,029.06 mi (8,093.50 km) |
| Mountain Ash to Rio Linda (California) | 5,165.93 mi (8,313.77 km) |
| Mountain Ash to Rio Rancho (New Mexico) | 4,859.19 mi (7,820.11 km) |
| Mountain Ash to Rio Rico (Arizona) | 5,218.31 mi (8,398.06 km) |
| Mountain Ash to Ripon (California) | 5,210.20 mi (8,385.00 km) |
| Mountain Ash to River Edge (New Jersey) | 3,316.54 mi (5,337.46 km) |
| Mountain Ash to River Falls (Wisconsin) | 3,869.11 mi (6,226.73 km) |
| Mountain Ash to River Forest (Illinois) | 3,823.99 mi (6,154.12 km) |
| Mountain Ash to River Grove (Illinois) | 3,823.36 mi (6,153.11 km) |
