| Houston to Robertsville (New Jersey) | 1,392.69 mi (2,241.32 km) |
| Houston to Robinson (Texas) | 154.34 mi (248.38 km) |
| Houston to Robstown (Texas) | 194.96 mi (313.77 km) |
| Houston to Rochester (Michigan) | 1,120.80 mi (1,803.75 km) |
| Houston to Rochester (Minnesota) | 996.04 mi (1,602.97 km) |
| Houston to Rochester (New Hampshire) | 1,635.60 mi (2,632.24 km) |
| Houston to Rochester (New York) | 1,347.33 mi (2,168.32 km) |
| Houston to Rochester Hills (Michigan) | 1,118.43 mi (1,799.93 km) |
| Houston to Rock Hill (South Carolina) | 909.70 mi (1,464.02 km) |
| Houston to Rock Island (Illinois) | 850.81 mi (1,369.25 km) |
| Houston to Rock Springs (Wyoming) | 1,123.29 mi (1,807.75 km) |
| Houston to Rockford (Illinois) | 930.78 mi (1,497.95 km) |
| Houston to Rockledge (Florida) | 890.16 mi (1,432.58 km) |
| Houston to Rocklin (California) | 1,595.22 mi (2,567.26 km) |
| Houston to Rockport (Texas) | 158.45 mi (255.00 km) |
