| Maryland Heights to Rockville (Maryland) | 716.00 mi (1,152.30 km) |
| Maryland Heights to Rockville Centre (New York) | 903.75 mi (1,454.44 km) |
| Maryland Heights to Rockwall (Texas) | 521.56 mi (839.36 km) |
| Maryland Heights to Rocky Mount (North Carolina) | 720.81 mi (1,160.03 km) |
| Maryland Heights to Rocky Point (New York) | 941.50 mi (1,515.19 km) |
| Maryland Heights to Rocky River (Ohio) | 493.50 mi (794.22 km) |
| Maryland Heights to Roessleville (New York) | 913.97 mi (1,470.90 km) |
| Maryland Heights to Rogers (Arkansas) | 261.06 mi (420.13 km) |
| Maryland Heights to Rogers (Minnesota) | 474.37 mi (763.42 km) |
| Maryland Heights to Rohnert Park (California) | 1,732.62 mi (2,788.39 km) |
| Maryland Heights to Rolla (Missouri) | 87.80 mi (141.30 km) |
| Maryland Heights to Rolling Meadows (Illinois) | 265.26 mi (426.89 km) |
| Maryland Heights to Roma (Texas) | 983.38 mi (1,582.60 km) |
| Maryland Heights to Rome (Georgia) | 425.22 mi (684.32 km) |
| Maryland Heights to Rome (New York) | 839.92 mi (1,351.71 km) |
