| Red Oak to Ridgeland (Mississippi) | 386.96 mi (622.75 km) |
| Red Oak to Ridgewood (New Jersey) | 1,379.22 mi (2,219.64 km) |
| Red Oak to Rifle (Colorado) | 781.13 mi (1,257.10 km) |
| Red Oak to Rincon (Georgia) | 906.47 mi (1,458.83 km) |
| Red Oak to Ringwood (New Jersey) | 1,373.85 mi (2,211.00 km) |
| Red Oak to Río Grande (Puerto Rico) | 2,152.57 mi (3,464.23 km) |
| Red Oak to Rio Grande City (Texas) | 441.54 mi (710.59 km) |
| Red Oak to Rio Linda (California) | 1,443.96 mi (2,323.83 km) |
| Red Oak to Rio Rancho (New Mexico) | 599.32 mi (964.52 km) |
| Red Oak to Rio Rico (Arizona) | 834.46 mi (1,342.94 km) |
| Red Oak to Ripon (California) | 1,417.63 mi (2,281.45 km) |
| Red Oak to River Edge (New Jersey) | 1,381.74 mi (2,223.70 km) |
| Red Oak to River Falls (Wisconsin) | 881.31 mi (1,418.33 km) |
| Red Oak to River Forest (Illinois) | 813.21 mi (1,308.73 km) |
| Red Oak to River Grove (Illinois) | 814.14 mi (1,310.24 km) |
