| Highlands Ranch to Rockville (Maryland) | 1,481.34 mi (2,383.98 km) |
| Highlands Ranch to Rockville Centre (New York) | 1,648.92 mi (2,653.68 km) |
| Highlands Ranch to Rockwall (Texas) | 659.49 mi (1,061.34 km) |
| Highlands Ranch to Rocky Mount (North Carolina) | 1,498.58 mi (2,411.73 km) |
| Highlands Ranch to Rocky Point (New York) | 1,682.88 mi (2,708.33 km) |
| Highlands Ranch to Rocky River (Ohio) | 1,218.12 mi (1,960.38 km) |
| Highlands Ranch to Roessleville (New York) | 1,627.85 mi (2,619.77 km) |
| Highlands Ranch to Rogers (Arkansas) | 629.74 mi (1,013.46 km) |
| Highlands Ranch to Rogers (Minnesota) | 699.22 mi (1,125.28 km) |
| Highlands Ranch to Rohnert Park (California) | 954.54 mi (1,536.19 km) |
| Highlands Ranch to Rolla (Missouri) | 719.70 mi (1,158.24 km) |
| Highlands Ranch to Rolling Meadows (Illinois) | 901.72 mi (1,451.18 km) |
| Highlands Ranch to Roma (Texas) | 969.90 mi (1,560.91 km) |
| Highlands Ranch to Rome (Georgia) | 1,149.41 mi (1,849.79 km) |
| Highlands Ranch to Rome (New York) | 1,541.07 mi (2,480.11 km) |
