| River Ridge to Reading (Pennsylvania) | 1,077.46 mi (1,734.00 km) |
| River Ridge to Red Bank (New Jersey) | 1,157.74 mi (1,863.20 km) |
| River Ridge to Red Bank (Tennessee) | 457.01 mi (735.49 km) |
| River Ridge to Red Bluff (California) | 1,930.53 mi (3,106.89 km) |
| River Ridge to Red Hill (South Carolina) | 708.15 mi (1,139.66 km) |
| River Ridge to Red Oak (Texas) | 426.27 mi (686.02 km) |
| River Ridge to Red Wing (Minnesota) | 1,018.65 mi (1,639.35 km) |
| River Ridge to Redan (Georgia) | 440.91 mi (709.58 km) |
| River Ridge to Redding (California) | 1,942.45 mi (3,126.07 km) |
| River Ridge to Redland (Maryland) | 975.58 mi (1,570.05 km) |
| River Ridge to Redlands (California) | 1,599.39 mi (2,573.97 km) |
| River Ridge to Redmond (Oregon) | 1,954.30 mi (3,145.14 km) |
| River Ridge to Redmond (Washington) | 2,084.95 mi (3,355.40 km) |
| River Ridge to Redondo Beach (California) | 1,667.93 mi (2,684.27 km) |
| River Ridge to Redwood City (California) | 1,901.24 mi (3,059.75 km) |
