| Mason City to Cold Springs (Nevada) | 1,401.59 mi (2,255.64 km) |
| Mason City to Coldwater (Michigan) | 425.44 mi (684.67 km) |
| Mason City to Colesville (Maryland) | 887.33 mi (1,428.02 km) |
| Mason City to College (Alaska) | 2,557.04 mi (4,115.15 km) |
| Mason City to College Park (Georgia) | 808.77 mi (1,301.59 km) |
| Mason City to College Park (Maryland) | 892.78 mi (1,436.80 km) |
| Mason City to College Station (Texas) | 884.58 mi (1,423.60 km) |
| Mason City to Collegedale (Tennessee) | 709.11 mi (1,141.21 km) |
| Mason City to Colleyville (Texas) | 740.35 mi (1,191.49 km) |
| Mason City to Collierville (Tennessee) | 590.26 mi (949.93 km) |
| Mason City to Collinsville (Illinois) | 351.02 mi (564.91 km) |
| Mason City to Colonia (New Jersey) | 985.35 mi (1,585.77 km) |
| Mason City to Colonial Heights (Virginia) | 925.66 mi (1,489.71 km) |
| Mason City to Colonial Park (Pennsylvania) | 866.45 mi (1,394.42 km) |
| Mason City to Colorado Springs (Colorado) | 670.63 mi (1,079.28 km) |
