| Mason City to Reidsville (North Carolina) | 857.37 mi (1,379.80 km) |
| Mason City to Reisterstown (Maryland) | 886.30 mi (1,426.35 km) |
| Mason City to Rendon (Texas) | 762.49 mi (1,227.11 km) |
| Mason City to Reno (Nevada) | 1,398.25 mi (2,250.26 km) |
| Mason City to Renton (Washington) | 1,431.24 mi (2,303.36 km) |
| Mason City to Republic (Missouri) | 415.00 mi (667.88 km) |
| Mason City to Reston (Virginia) | 873.89 mi (1,406.39 km) |
| Mason City to Revere (Massachusetts) | 1,123.36 mi (1,807.87 km) |
| Mason City to Rexburg (Idaho) | 931.23 mi (1,498.68 km) |
| Mason City to Reynoldsburg (Ohio) | 580.89 mi (934.85 km) |
| Mason City to Rialto (California) | 1,440.01 mi (2,317.48 km) |
| Mason City to Richardson (Texas) | 728.44 mi (1,172.31 km) |
| Mason City to Richfield (Minnesota) | 119.44 mi (192.22 km) |
| Mason City to Richfield (Wisconsin) | 249.81 mi (402.02 km) |
| Mason City to Richland (Washington) | 1,293.27 mi (2,081.32 km) |
