| River Grove to Reedley (California) | 1,720.22 mi (2,768.43 km) |
| River Grove to Reidsville (North Carolina) | 583.04 mi (938.32 km) |
| River Grove to Reisterstown (Maryland) | 601.72 mi (968.37 km) |
| River Grove to Rendon (Texas) | 825.94 mi (1,329.23 km) |
| River Grove to Reno (Nevada) | 1,674.07 mi (2,694.16 km) |
| River Grove to Renton (Washington) | 1,715.29 mi (2,760.49 km) |
| River Grove to Republic (Missouri) | 445.10 mi (716.31 km) |
| River Grove to Reston (Virginia) | 588.29 mi (946.77 km) |
| River Grove to Revere (Massachusetts) | 861.29 mi (1,386.11 km) |
| River Grove to Rexburg (Idaho) | 1,215.70 mi (1,956.48 km) |
| River Grove to Reynoldsburg (Ohio) | 296.13 mi (476.58 km) |
| River Grove to Rialto (California) | 1,686.65 mi (2,714.41 km) |
| River Grove to Richardson (Texas) | 786.09 mi (1,265.08 km) |
| River Grove to Richfield (Minnesota) | 340.93 mi (548.67 km) |
| River Grove to Richfield (Wisconsin) | 93.00 mi (149.68 km) |
