| Port Huron to Reichenbach/Vogtland | 4,197.49 mi (6,755.21 km) |
| Port Huron to Reinbek | 4,017.71 mi (6,465.87 km) |
| Port Huron to Reinfeld | 4,014.56 mi (6,460.81 km) |
| Port Huron to Reinheim | 4,097.51 mi (6,594.30 km) |
| Port Huron to Reiskirchen | 4,069.67 mi (6,549.50 km) |
| Port Huron to Rellingen | 3,997.50 mi (6,433.36 km) |
| Port Huron to Remagen | 4,010.09 mi (6,453.62 km) |
| Port Huron to Remscheid | 3,987.89 mi (6,417.88 km) |
| Port Huron to Rendsburg | 3,969.72 mi (6,388.64 km) |
| Port Huron to Renningen | 4,140.34 mi (6,663.23 km) |
| Port Huron to Reutlingen | 4,161.69 mi (6,697.60 km) |
| Port Huron to Rhaude | 3,933.01 mi (6,329.57 km) |
| Port Huron to Rheda-Wiedenbruck | 4,005.86 mi (6,446.80 km) |
| Port Huron to Rhede | 3,946.95 mi (6,352.01 km) |
| Port Huron to Rheinau | 4,105.31 mi (6,606.86 km) |
