| Blackburn to Port Chester (New York) | 3,295.65 mi (5,303.84 km) |
| Blackburn to Port Hueneme (California) | 5,288.21 mi (8,510.55 km) |
| Blackburn to Port Huron (Michigan) | 3,544.51 mi (5,704.34 km) |
| Blackburn to Port Lavaca (Texas) | 4,808.25 mi (7,738.13 km) |
| Blackburn to Port Neches (Texas) | 4,633.09 mi (7,456.23 km) |
| Blackburn to Port Orange (Florida) | 4,168.32 mi (6,708.27 km) |
| Blackburn to Port Orchard (Washington) | 4,615.42 mi (7,427.80 km) |
| Blackburn to Port Royal (South Carolina) | 3,990.44 mi (6,421.99 km) |
| Blackburn to Port Salerno (Florida) | 4,236.56 mi (6,818.09 km) |
| Blackburn to Port St. John (Florida) | 4,192.76 mi (6,747.59 km) |
| Blackburn to Port St. Lucie (Florida) | 4,237.68 mi (6,819.89 km) |
| Blackburn to Port Washington (New York) | 3,304.05 mi (5,317.35 km) |
| Blackburn to Port Washington (Wisconsin) | 3,728.19 mi (5,999.95 km) |
| Blackburn to Port Wentworth (Georgia) | 4,018.35 mi (6,466.91 km) |
| Blackburn to Portage (Indiana) | 3,787.79 mi (6,095.86 km) |
