| Mason City to Robertsville (New Jersey) | 991.52 mi (1,595.70 km) |
| Mason City to Robinson (Texas) | 836.25 mi (1,345.82 km) |
| Mason City to Robstown (Texas) | 1,089.86 mi (1,753.97 km) |
| Mason City to Rochester (Michigan) | 510.72 mi (821.93 km) |
| Mason City to Rochester (Minnesota) | 69.93 mi (112.55 km) |
| Mason City to Rochester (New Hampshire) | 1,115.50 mi (1,795.22 km) |
| Mason City to Rochester (New York) | 784.29 mi (1,262.20 km) |
| Mason City to Rochester Hills (Michigan) | 509.07 mi (819.27 km) |
| Mason City to Rock Hill (South Carolina) | 863.50 mi (1,389.66 km) |
| Mason City to Rock Island (Illinois) | 177.00 mi (284.86 km) |
| Mason City to Rock Springs (Wyoming) | 823.53 mi (1,325.35 km) |
| Mason City to Rockford (Illinois) | 218.76 mi (352.06 km) |
| Mason City to Rockledge (Florida) | 1,237.21 mi (1,991.09 km) |
| Mason City to Rocklin (California) | 1,486.20 mi (2,391.80 km) |
| Mason City to Rockport (Texas) | 1,066.76 mi (1,716.78 km) |
