| Mason City to University Place (Washington) | 1,447.56 mi (2,329.62 km) |
| Mason City to Upland (California) | 1,453.05 mi (2,338.46 km) |
| Mason City to Upper Arlington (Ohio) | 565.67 mi (910.35 km) |
| Mason City to Upper Grand Lagoon (Florida) | 986.49 mi (1,587.60 km) |
| Mason City to Upper Montclair (New Jersey) | 986.30 mi (1,587.30 km) |
| Mason City to Urbana (Illinois) | 332.76 mi (535.53 km) |
| Mason City to Urbana (Maryland) | 863.59 mi (1,389.82 km) |
| Mason City to Urbana (Ohio) | 530.72 mi (854.11 km) |
| Mason City to Urbandale (Iowa) | 108.45 mi (174.53 km) |
| Mason City to Utica (New York) | 904.69 mi (1,455.95 km) |
| Mason City to Uvalde (Texas) | 1,029.38 mi (1,656.63 km) |
| Mason City to Vacaville (California) | 1,533.57 mi (2,468.05 km) |
| Mason City to Vadnais Heights (Minnesota) | 132.00 mi (212.43 km) |
| Mason City to Vail (Arizona) | 1,223.86 mi (1,969.61 km) |
| Mason City to Valdosta (Georgia) | 1,009.14 mi (1,624.06 km) |
