| Johnston to Port Chester (New York) | 1,038.98 mi (1,672.08 km) |
| Johnston to Port Hueneme (California) | 1,476.18 mi (2,375.69 km) |
| Johnston to Port Huron (Michigan) | 582.75 mi (937.85 km) |
| Johnston to Port Lavaca (Texas) | 917.87 mi (1,477.17 km) |
| Johnston to Port Neches (Texas) | 809.49 mi (1,302.75 km) |
| Johnston to Port Orange (Florida) | 1,123.51 mi (1,808.12 km) |
| Johnston to Port Orchard (Washington) | 1,469.76 mi (2,365.34 km) |
| Johnston to Port Royal (South Carolina) | 963.34 mi (1,550.34 km) |
| Johnston to Port Salerno (Florida) | 1,263.48 mi (2,033.37 km) |
| Johnston to Port St. John (Florida) | 1,166.26 mi (1,876.91 km) |
| Johnston to Port St. Lucie (Florida) | 1,249.01 mi (2,010.09 km) |
| Johnston to Port Washington (New York) | 1,040.59 mi (1,674.67 km) |
| Johnston to Port Washington (Wisconsin) | 319.32 mi (513.90 km) |
| Johnston to Port Wentworth (Georgia) | 951.39 mi (1,531.12 km) |
| Johnston to Portage (Indiana) | 337.90 mi (543.79 km) |
