| Duluth to Reidsville (North Carolina) | 964.88 mi (1,552.83 km) |
| Duluth to Reisterstown (Maryland) | 921.24 mi (1,482.59 km) |
| Duluth to Rendon (Texas) | 1,017.06 mi (1,636.80 km) |
| Duluth to Reno (Nevada) | 1,473.78 mi (2,371.83 km) |
| Duluth to Renton (Washington) | 1,404.76 mi (2,260.74 km) |
| Duluth to Republic (Missouri) | 668.74 mi (1,076.23 km) |
| Duluth to Reston (Virginia) | 921.46 mi (1,482.95 km) |
| Duluth to Revere (Massachusetts) | 1,078.77 mi (1,736.11 km) |
| Duluth to Rexburg (Idaho) | 973.93 mi (1,567.39 km) |
| Duluth to Reynoldsburg (Ohio) | 664.06 mi (1,068.70 km) |
| Duluth to Rialto (California) | 1,578.80 mi (2,540.83 km) |
| Duluth to Richardson (Texas) | 983.61 mi (1,582.97 km) |
| Duluth to Richfield (Minnesota) | 142.31 mi (229.02 km) |
| Duluth to Richfield (Wisconsin) | 309.80 mi (498.58 km) |
| Duluth to Richland (Washington) | 1,284.82 mi (2,067.71 km) |
