| Darby to Romeoville (Illinois) | 681.39 mi (1,096.60 km) |
| Darby to Romulus (Michigan) | 450.93 mi (725.70 km) |
| Darby to Ronkonkoma (New York) | 127.94 mi (205.90 km) |
| Darby to Roosevelt (New York) | 102.76 mi (165.37 km) |
| Darby to Rosamond (California) | 2,360.72 mi (3,799.22 km) |
| Darby to Rosaryville (Maryland) | 115.55 mi (185.97 km) |
| Darby to Roscoe (Illinois) | 734.71 mi (1,182.41 km) |
| Darby to Rose Hill (Virginia) | 126.01 mi (202.79 km) |
| Darby to Roseburg (Oregon) | 2,461.96 mi (3,962.14 km) |
| Darby to Rosedale (California) | 2,399.84 mi (3,862.17 km) |
| Darby to Rosedale (Maryland) | 78.06 mi (125.63 km) |
| Darby to Roselle (Illinois) | 683.53 mi (1,100.03 km) |
| Darby to Roselle (New Jersey) | 73.07 mi (117.60 km) |
| Darby to Roselle Park (New Jersey) | 73.42 mi (118.16 km) |
| Darby to Rosemead (California) | 2,374.33 mi (3,821.12 km) |
