| Port Huron to Owosso (Michigan) | 87.80 mi (141.31 km) |
| Port Huron to Oxford (Alabama) | 674.45 mi (1,085.42 km) |
| Port Huron to Oxford (Mississippi) | 707.29 mi (1,138.28 km) |
| Port Huron to Oxford (Ohio) | 268.36 mi (431.88 km) |
| Port Huron to Oxnard (California) | 2,056.69 mi (3,309.92 km) |
| Port Huron to Oxon Hill (Maryland) | 406.62 mi (654.39 km) |
| Port Huron to Ozark (Alabama) | 815.88 mi (1,313.04 km) |
| Port Huron to Ozark (Missouri) | 701.95 mi (1,129.68 km) |
| Port Huron to Pace (Florida) | 892.96 mi (1,437.09 km) |
| Port Huron to Pacific Grove (California) | 2,121.36 mi (3,413.99 km) |
| Port Huron to Pacifica (California) | 2,121.80 mi (3,414.70 km) |
| Port Huron to Paducah (Kentucky) | 523.68 mi (842.78 km) |
| Port Huron to Pahrump (Nevada) | 1,833.21 mi (2,950.27 km) |
| Port Huron to Painesville (Ohio) | 105.91 mi (170.45 km) |
| Port Huron to Palatine (Illinois) | 291.38 mi (468.92 km) |
