| River Grove to Reading (Pennsylvania) | 628.92 mi (1,012.14 km) |
| River Grove to Red Bank (New Jersey) | 724.01 mi (1,165.18 km) |
| River Grove to Red Bank (Tennessee) | 490.28 mi (789.03 km) |
| River Grove to Red Bluff (California) | 1,784.69 mi (2,872.18 km) |
| River Grove to Red Hill (South Carolina) | 739.90 mi (1,190.76 km) |
| River Grove to Red Oak (Texas) | 814.14 mi (1,310.24 km) |
| River Grove to Red Wing (Minnesota) | 301.95 mi (485.94 km) |
| River Grove to Redan (Georgia) | 599.84 mi (965.34 km) |
| River Grove to Redding (California) | 1,783.96 mi (2,871.01 km) |
| River Grove to Redland (Maryland) | 593.16 mi (954.60 km) |
| River Grove to Redlands (California) | 1,677.70 mi (2,700.00 km) |
| River Grove to Redmond (Oregon) | 1,678.44 mi (2,701.18 km) |
| River Grove to Redmond (Washington) | 1,711.89 mi (2,755.02 km) |
| River Grove to Redondo Beach (California) | 1,745.11 mi (2,808.49 km) |
| River Grove to Redwood City (California) | 1,840.40 mi (2,961.84 km) |
