| Karhula to Port Chester (New York) | 4,132.77 mi (6,651.05 km) |
| Karhula to Port Hueneme (California) | 5,619.86 mi (9,044.28 km) |
| Karhula to Port Huron (Michigan) | 4,263.34 mi (6,861.18 km) |
| Karhula to Port Lavaca (Texas) | 5,509.68 mi (8,866.97 km) |
| Karhula to Port Neches (Texas) | 5,356.08 mi (8,619.78 km) |
| Karhula to Port Orange (Florida) | 5,049.73 mi (8,126.76 km) |
| Karhula to Port Orchard (Washington) | 4,780.62 mi (7,693.66 km) |
| Karhula to Port Royal (South Carolina) | 4,845.54 mi (7,798.14 km) |
| Karhula to Port Salerno (Florida) | 5,143.47 mi (8,277.61 km) |
| Karhula to Port St. John (Florida) | 5,081.85 mi (8,178.45 km) |
| Karhula to Port St. Lucie (Florida) | 5,141.39 mi (8,274.26 km) |
| Karhula to Port Washington (New York) | 4,143.23 mi (6,667.89 km) |
| Karhula to Port Washington (Wisconsin) | 4,380.45 mi (7,049.65 km) |
| Karhula to Port Wentworth (Georgia) | 4,869.59 mi (7,836.84 km) |
| Karhula to Portage (Indiana) | 4,470.30 mi (7,194.26 km) |
