| Ridge to Reading (Pennsylvania) | 164.41 mi (264.60 km) |
| Ridge to Red Bank (New Jersey) | 73.18 mi (117.78 km) |
| Ridge to Red Bank (Tennessee) | 784.41 mi (1,262.39 km) |
| Ridge to Red Bluff (California) | 2,556.99 mi (4,115.07 km) |
| Ridge to Red Hill (South Carolina) | 596.28 mi (959.62 km) |
| Ridge to Red Oak (Texas) | 1,439.17 mi (2,316.12 km) |
| Ridge to Red Wing (Minnesota) | 1,029.62 mi (1,657.01 km) |
| Ridge to Redan (Georgia) | 792.29 mi (1,275.07 km) |
| Ridge to Redding (California) | 2,554.99 mi (4,111.86 km) |
| Ridge to Redland (Maryland) | 256.72 mi (413.15 km) |
| Ridge to Redlands (California) | 2,447.46 mi (3,938.81 km) |
| Ridge to Redmond (Oregon) | 2,432.44 mi (3,914.63 km) |
| Ridge to Redmond (Washington) | 2,437.03 mi (3,922.02 km) |
| Ridge to Redondo Beach (California) | 2,515.84 mi (4,048.85 km) |
| Ridge to Redwood City (California) | 2,617.28 mi (4,212.10 km) |
