| Middle River to Reidsville (North Carolina) | 272.96 mi (439.29 km) |
| Middle River to Reisterstown (Maryland) | 22.13 mi (35.62 km) |
| Middle River to Rendon (Texas) | 1,250.44 mi (2,012.39 km) |
| Middle River to Reno (Nevada) | 2,293.77 mi (3,691.47 km) |
| Middle River to Renton (Washington) | 2,329.05 mi (3,748.25 km) |
| Middle River to Republic (Missouri) | 934.50 mi (1,503.93 km) |
| Middle River to Reston (Virginia) | 56.35 mi (90.68 km) |
| Middle River to Revere (Massachusetts) | 353.93 mi (569.59 km) |
| Middle River to Rexburg (Idaho) | 1,839.41 mi (2,960.24 km) |
| Middle River to Reynoldsburg (Ohio) | 341.40 mi (549.43 km) |
| Middle River to Rialto (California) | 2,277.25 mi (3,664.88 km) |
| Middle River to Richardson (Texas) | 1,210.84 mi (1,948.65 km) |
| Middle River to Richfield (Minnesota) | 942.51 mi (1,516.83 km) |
| Middle River to Richfield (Wisconsin) | 669.03 mi (1,076.70 km) |
| Middle River to Richland (Washington) | 2,196.91 mi (3,535.58 km) |
