| Thornton to Port Chester (New York) | 3,319.78 mi (5,342.67 km) |
| Thornton to Port Hueneme (California) | 5,305.86 mi (8,538.96 km) |
| Thornton to Port Huron (Michigan) | 3,567.17 mi (5,740.80 km) |
| Thornton to Port Lavaca (Texas) | 4,831.27 mi (7,775.18 km) |
| Thornton to Port Neches (Texas) | 4,656.31 mi (7,493.61 km) |
| Thornton to Port Orange (Florida) | 4,193.22 mi (6,748.34 km) |
| Thornton to Port Orchard (Washington) | 4,629.50 mi (7,450.47 km) |
| Thornton to Port Royal (South Carolina) | 4,015.02 mi (6,461.55 km) |
| Thornton to Port Salerno (Florida) | 4,261.72 mi (6,858.57 km) |
| Thornton to Port St. John (Florida) | 4,217.74 mi (6,787.79 km) |
| Thornton to Port St. Lucie (Florida) | 4,262.80 mi (6,860.32 km) |
| Thornton to Port Washington (New York) | 3,328.21 mi (5,356.23 km) |
| Thornton to Port Washington (Wisconsin) | 3,749.97 mi (6,035.00 km) |
| Thornton to Port Wentworth (Georgia) | 4,042.90 mi (6,506.42 km) |
| Thornton to Portage (Indiana) | 3,810.06 mi (6,131.70 km) |
