| Port Huron to Somersworth (New Hampshire) | 582.52 mi (937.47 km) |
| Port Huron to Somerton (Arizona) | 1,887.34 mi (3,037.38 km) |
| Port Huron to Somerville (Massachusetts) | 576.82 mi (928.30 km) |
| Port Huron to Somerville (New Jersey) | 436.29 mi (702.14 km) |
| Port Huron to Sonoma (California) | 2,103.06 mi (3,384.55 km) |
| Port Huron to Soquel (California) | 2,111.82 mi (3,398.64 km) |
| Port Huron to South Bend (Indiana) | 215.43 mi (346.71 km) |
| Port Huron to South Bradenton (Florida) | 1,072.42 mi (1,725.89 km) |
| Port Huron to South Burlington (Vermont) | 471.26 mi (758.43 km) |
| Port Huron to South Charleston (West Virginia) | 322.79 mi (519.48 km) |
| Port Huron to South Daytona (Florida) | 957.93 mi (1,541.64 km) |
| Port Huron to South El Monte (California) | 2,004.49 mi (3,225.91 km) |
| Port Huron to South Elgin (Illinois) | 307.00 mi (494.06 km) |
| Port Huron to South Euclid (Ohio) | 111.07 mi (178.74 km) |
| Port Huron to South Farmingdale (New York) | 488.21 mi (785.69 km) |
