| Port Huron to Robertsville (New Jersey) | 458.11 mi (737.26 km) |
| Port Huron to Robinson (Texas) | 1,131.41 mi (1,820.82 km) |
| Port Huron to Robstown (Texas) | 1,350.88 mi (2,174.03 km) |
| Port Huron to Rochester (Michigan) | 40.09 mi (64.52 km) |
| Port Huron to Rochester (Minnesota) | 507.87 mi (817.34 km) |
| Port Huron to Rochester (New Hampshire) | 577.73 mi (929.77 km) |
| Port Huron to Rochester (New York) | 243.70 mi (392.20 km) |
| Port Huron to Rochester Hills (Michigan) | 42.47 mi (68.35 km) |
| Port Huron to Rock Hill (South Carolina) | 560.70 mi (902.36 km) |
| Port Huron to Rock Island (Illinois) | 429.38 mi (691.01 km) |
| Port Huron to Rock Springs (Wyoming) | 1,366.46 mi (2,199.10 km) |
| Port Huron to Rockford (Illinois) | 340.43 mi (547.86 km) |
| Port Huron to Rockledge (Florida) | 1,017.47 mi (1,637.46 km) |
| Port Huron to Rocklin (California) | 2,029.12 mi (3,265.55 km) |
| Port Huron to Rockport (Texas) | 1,316.76 mi (2,119.12 km) |
