| Maryland Heights to Reidsville (North Carolina) | 613.93 mi (988.02 km) |
| Maryland Heights to Reisterstown (Maryland) | 733.69 mi (1,180.75 km) |
| Maryland Heights to Rendon (Texas) | 568.88 mi (915.52 km) |
| Maryland Heights to Reno (Nevada) | 1,568.27 mi (2,523.88 km) |
| Maryland Heights to Renton (Washington) | 1,696.39 mi (2,730.08 km) |
| Maryland Heights to Republic (Missouri) | 194.96 mi (313.75 km) |
| Maryland Heights to Reston (Virginia) | 706.18 mi (1,136.48 km) |
| Maryland Heights to Revere (Massachusetts) | 1,050.84 mi (1,691.16 km) |
| Maryland Heights to Rexburg (Idaho) | 1,157.99 mi (1,863.60 km) |
| Maryland Heights to Reynoldsburg (Ohio) | 419.13 mi (674.53 km) |
| Maryland Heights to Rialto (California) | 1,523.98 mi (2,452.61 km) |
| Maryland Heights to Richardson (Texas) | 528.49 mi (850.53 km) |
| Maryland Heights to Richfield (Minnesota) | 449.27 mi (723.03 km) |
| Maryland Heights to Richfield (Wisconsin) | 333.18 mi (536.20 km) |
| Maryland Heights to Richland (Washington) | 1,548.00 mi (2,491.27 km) |
