| Frederick to Rancho Cordova (California) | 2,331.01 mi (3,751.40 km) |
| Frederick to Rancho Cucamonga (California) | 2,233.44 mi (3,594.37 km) |
| Frederick to Rancho Mirage (California) | 2,181.87 mi (3,511.38 km) |
| Frederick to Rancho Palos Verdes (California) | 2,285.30 mi (3,677.83 km) |
| Frederick to Rancho San Diego (California) | 2,234.69 mi (3,596.38 km) |
| Frederick to Rancho Santa Margarita (California) | 2,247.75 mi (3,617.40 km) |
| Frederick to Randallstown (Maryland) | 32.93 mi (53.00 km) |
| Frederick to Rantoul (Illinois) | 572.39 mi (921.17 km) |
| Frederick to Rapid City (South Dakota) | 1,362.15 mi (2,192.17 km) |
| Frederick to Ravenna (Ohio) | 234.36 mi (377.17 km) |
| Frederick to Raymondville (Texas) | 1,475.60 mi (2,374.76 km) |
| Frederick to Raymore (Missouri) | 913.35 mi (1,469.89 km) |
| Frederick to Raytown (Missouri) | 911.88 mi (1,467.53 km) |
| Frederick to Reading (Ohio) | 375.33 mi (604.03 km) |
| Frederick to Reading (Pennsylvania) | 100.69 mi (162.05 km) |
