| Port Huron to River Ridge (Louisiana) | 997.15 mi (1,604.76 km) |
| Port Huron to Riverbank (California) | 2,041.29 mi (3,285.14 km) |
| Port Huron to Riverdale (Georgia) | 659.41 mi (1,061.21 km) |
| Port Huron to Riverdale (Illinois) | 281.14 mi (452.46 km) |
| Port Huron to Riverside (California) | 1,975.34 mi (3,179.00 km) |
| Port Huron to Riverside (Ohio) | 237.59 mi (382.36 km) |
| Port Huron to Riverton (Utah) | 1,523.52 mi (2,451.86 km) |
| Port Huron to Riverton (Wyoming) | 1,307.06 mi (2,103.50 km) |
| Port Huron to Riverview (Florida) | 1,047.44 mi (1,685.69 km) |
| Port Huron to Riverview (Michigan) | 67.89 mi (109.26 km) |
| Port Huron to Riviera Beach (Florida) | 1,127.23 mi (1,814.10 km) |
| Port Huron to Riviera Beach (Maryland) | 405.42 mi (652.47 km) |
| Port Huron to Roanoke (Virginia) | 415.24 mi (668.27 km) |
| Port Huron to Roanoke Rapids (North Carolina) | 518.24 mi (834.02 km) |
| Port Huron to Robbinsdale (Minnesota) | 559.06 mi (899.72 km) |
