| Duluth to Rancho Cordova (California) | 1,572.65 mi (2,530.94 km) |
| Duluth to Rancho Cucamonga (California) | 1,586.12 mi (2,552.61 km) |
| Duluth to Rancho Mirage (California) | 1,554.08 mi (2,501.05 km) |
| Duluth to Rancho Palos Verdes (California) | 1,637.30 mi (2,634.99 km) |
| Duluth to Rancho San Diego (California) | 1,622.20 mi (2,610.68 km) |
| Duluth to Rancho Santa Margarita (California) | 1,610.06 mi (2,591.14 km) |
| Duluth to Randallstown (Maryland) | 925.27 mi (1,489.09 km) |
| Duluth to Rantoul (Illinois) | 489.54 mi (787.85 km) |
| Duluth to Rapid City (South Dakota) | 568.32 mi (914.62 km) |
| Duluth to Ravenna (Ohio) | 665.44 mi (1,070.92 km) |
| Duluth to Raymondville (Texas) | 1,436.03 mi (2,311.06 km) |
| Duluth to Raymore (Missouri) | 563.20 mi (906.38 km) |
| Duluth to Raytown (Missouri) | 550.29 mi (885.61 km) |
| Duluth to Reading (Ohio) | 650.35 mi (1,046.64 km) |
| Duluth to Reading (Pennsylvania) | 923.05 mi (1,485.51 km) |
