| Port Huron to Rockville (Maryland) | 385.06 mi (619.70 km) |
| Port Huron to Rockville Centre (New York) | 480.31 mi (772.98 km) |
| Port Huron to Rockwall (Texas) | 1,029.57 mi (1,656.93 km) |
| Port Huron to Rocky Mount (North Carolina) | 543.77 mi (875.11 km) |
| Port Huron to Rocky Point (New York) | 507.96 mi (817.49 km) |
| Port Huron to Rocky River (Ohio) | 108.68 mi (174.91 km) |
| Port Huron to Roessleville (New York) | 438.10 mi (705.06 km) |
| Port Huron to Rogers (Arkansas) | 773.66 mi (1,245.08 km) |
| Port Huron to Rogers (Minnesota) | 572.93 mi (922.04 km) |
| Port Huron to Rohnert Park (California) | 2,113.50 mi (3,401.35 km) |
| Port Huron to Rolla (Missouri) | 600.41 mi (966.26 km) |
| Port Huron to Rolling Meadows (Illinois) | 291.21 mi (468.66 km) |
| Port Huron to Roma (Texas) | 1,476.00 mi (2,375.39 km) |
| Port Huron to Rome (Georgia) | 620.10 mi (997.96 km) |
| Port Huron to Rome (New York) | 350.80 mi (564.55 km) |
