| Frederick to Red Bank (New Jersey) | 188.32 mi (303.08 km) |
| Frederick to Red Bank (Tennessee) | 525.96 mi (846.45 km) |
| Frederick to Red Bluff (California) | 2,354.24 mi (3,788.79 km) |
| Frederick to Red Hill (South Carolina) | 400.68 mi (644.84 km) |
| Frederick to Red Oak (Texas) | 1,180.61 mi (1,900.01 km) |
| Frederick to Red Wing (Minnesota) | 855.36 mi (1,376.58 km) |
| Frederick to Redan (Georgia) | 542.84 mi (873.62 km) |
| Frederick to Redding (California) | 2,354.25 mi (3,788.80 km) |
| Frederick to Redland (Maryland) | 25.18 mi (40.52 km) |
| Frederick to Redlands (California) | 2,214.22 mi (3,563.44 km) |
| Frederick to Redmond (Oregon) | 2,250.12 mi (3,621.21 km) |
| Frederick to Redmond (Washington) | 2,275.83 mi (3,662.59 km) |
| Frederick to Redondo Beach (California) | 2,283.36 mi (3,674.72 km) |
| Frederick to Redwood City (California) | 2,402.76 mi (3,866.88 km) |
| Frederick to Reedley (California) | 2,275.73 mi (3,662.44 km) |
