| Highlands Ranch to Romeoville (Illinois) | 895.44 mi (1,441.08 km) |
| Highlands Ranch to Romulus (Michigan) | 1,140.52 mi (1,835.49 km) |
| Highlands Ranch to Ronkonkoma (New York) | 1,674.31 mi (2,694.54 km) |
| Highlands Ranch to Roosevelt (New York) | 1,651.61 mi (2,658.02 km) |
| Highlands Ranch to Rosamond (California) | 796.23 mi (1,281.41 km) |
| Highlands Ranch to Rosaryville (Maryland) | 1,502.71 mi (2,418.37 km) |
| Highlands Ranch to Roscoe (Illinois) | 854.67 mi (1,375.46 km) |
| Highlands Ranch to Rose Hill (Virginia) | 1,487.54 mi (2,393.96 km) |
| Highlands Ranch to Roseburg (Oregon) | 984.01 mi (1,583.61 km) |
| Highlands Ranch to Rosedale (California) | 830.59 mi (1,336.70 km) |
| Highlands Ranch to Rosedale (Maryland) | 1,512.57 mi (2,434.24 km) |
| Highlands Ranch to Roselle (Illinois) | 898.01 mi (1,445.20 km) |
| Highlands Ranch to Roselle (New Jersey) | 1,616.72 mi (2,601.86 km) |
| Highlands Ranch to Roselle Park (New Jersey) | 1,616.26 mi (2,601.12 km) |
| Highlands Ranch to Rosemead (California) | 816.84 mi (1,314.57 km) |
