| Highlands Ranch to Red Bank (New Jersey) | 1,629.60 mi (2,622.59 km) |
| Highlands Ranch to Red Bank (Tennessee) | 1,120.87 mi (1,803.86 km) |
| Highlands Ranch to Red Bluff (California) | 915.60 mi (1,473.51 km) |
| Highlands Ranch to Red Hill (South Carolina) | 1,487.11 mi (2,393.27 km) |
| Highlands Ranch to Red Oak (Texas) | 666.05 mi (1,071.90 km) |
| Highlands Ranch to Red Wing (Minnesota) | 722.57 mi (1,162.87 km) |
| Highlands Ranch to Redan (Georgia) | 1,217.80 mi (1,959.86 km) |
| Highlands Ranch to Redding (California) | 921.13 mi (1,482.41 km) |
| Highlands Ranch to Redland (Maryland) | 1,481.20 mi (2,383.76 km) |
| Highlands Ranch to Redlands (California) | 773.32 mi (1,244.53 km) |
| Highlands Ranch to Redmond (Oregon) | 893.21 mi (1,437.49 km) |
| Highlands Ranch to Redmond (Washington) | 1,021.98 mi (1,644.72 km) |
| Highlands Ranch to Redondo Beach (California) | 838.84 mi (1,349.98 km) |
| Highlands Ranch to Redwood City (California) | 941.80 mi (1,515.68 km) |
| Highlands Ranch to Reedley (California) | 812.24 mi (1,307.18 km) |
