| Port Huron to Rende | 4,814.28 mi (7,747.83 km) |
| Port Huron to Resana | 4,378.40 mi (7,046.35 km) |
| Port Huron to Rescaldina | 4,259.66 mi (6,855.26 km) |
| Port Huron to Rezzato | 4,318.34 mi (6,949.70 km) |
| Port Huron to Rho | 4,266.22 mi (6,865.81 km) |
| Port Huron to Ribera | 4,771.77 mi (7,679.42 km) |
| Port Huron to Riccione Marina | 4,472.26 mi (7,197.40 km) |
| Port Huron to Riesi | 4,816.08 mi (7,750.72 km) |
| Port Huron to Rieti | 4,546.43 mi (7,316.77 km) |
| Port Huron to Rignano Flaminio | 4,539.67 mi (7,305.89 km) |
| Port Huron to Rignano sull'Arno | 4,435.20 mi (7,137.77 km) |
| Port Huron to Rimini | 4,466.56 mi (7,188.23 km) |
| Port Huron to Rionero in Vulture | 4,724.01 mi (7,602.56 km) |
| Port Huron to Riposto | 4,843.67 mi (7,795.13 km) |
| Port Huron to Riva del Garda | 4,325.05 mi (6,960.49 km) |
