| Mason City to Port Chester (New York) | 1,010.19 mi (1,625.75 km) |
| Mason City to Port Hueneme (California) | 1,526.12 mi (2,456.06 km) |
| Mason City to Port Huron (Michigan) | 542.94 mi (873.77 km) |
| Mason City to Port Lavaca (Texas) | 1,021.89 mi (1,644.58 km) |
| Mason City to Port Neches (Texas) | 911.04 mi (1,466.18 km) |
| Mason City to Port Orange (Florida) | 1,181.90 mi (1,902.09 km) |
| Mason City to Port Orchard (Washington) | 1,453.19 mi (2,338.69 km) |
| Mason City to Port Royal (South Carolina) | 1,008.77 mi (1,623.46 km) |
| Mason City to Port Salerno (Florida) | 1,324.09 mi (2,130.92 km) |
| Mason City to Port St. John (Florida) | 1,225.67 mi (1,972.52 km) |
| Mason City to Port St. Lucie (Florida) | 1,310.00 mi (2,108.24 km) |
| Mason City to Port Washington (New York) | 1,013.00 mi (1,630.27 km) |
| Mason City to Port Washington (Wisconsin) | 267.82 mi (431.01 km) |
| Mason City to Port Wentworth (Georgia) | 999.63 mi (1,608.74 km) |
| Mason City to Portage (Indiana) | 325.65 mi (524.08 km) |
