| Maryland Heights to Romeoville (Illinois) | 237.10 mi (381.58 km) |
| Maryland Heights to Romulus (Michigan) | 445.02 mi (716.19 km) |
| Maryland Heights to Ronkonkoma (New York) | 931.13 mi (1,498.51 km) |
| Maryland Heights to Roosevelt (New York) | 906.66 mi (1,459.13 km) |
| Maryland Heights to Rosamond (California) | 1,551.68 mi (2,497.19 km) |
| Maryland Heights to Rosaryville (Maryland) | 734.83 mi (1,182.60 km) |
| Maryland Heights to Roscoe (Illinois) | 267.41 mi (430.36 km) |
| Maryland Heights to Rose Hill (Virginia) | 719.59 mi (1,158.07 km) |
| Maryland Heights to Roseburg (Oregon) | 1,731.60 mi (2,786.74 km) |
| Maryland Heights to Rosedale (California) | 1,594.23 mi (2,565.66 km) |
| Maryland Heights to Rosedale (Maryland) | 750.13 mi (1,207.21 km) |
| Maryland Heights to Roselle (Illinois) | 258.08 mi (415.34 km) |
| Maryland Heights to Roselle (New Jersey) | 871.18 mi (1,402.02 km) |
| Maryland Heights to Roselle Park (New Jersey) | 870.88 mi (1,401.55 km) |
| Maryland Heights to Rosemead (California) | 1,562.42 mi (2,514.47 km) |
