| Port Huron to Racale | 4,864.47 mi (7,828.61 km) |
| Port Huron to Racconigi | 4,240.89 mi (6,825.06 km) |
| Port Huron to Raffadali | 4,787.36 mi (7,704.51 km) |
| Port Huron to Ragusa | 4,859.35 mi (7,820.37 km) |
| Port Huron to Ramacca | 4,837.91 mi (7,785.86 km) |
| Port Huron to Randazzo | 4,826.54 mi (7,767.57 km) |
| Port Huron to Rapallo | 4,320.25 mi (6,952.77 km) |
| Port Huron to Ravanusa | 4,811.91 mi (7,744.02 km) |
| Port Huron to Ravenna | 4,437.37 mi (7,141.26 km) |
| Port Huron to Recanati | 4,533.07 mi (7,295.27 km) |
| Port Huron to Recco | 4,316.20 mi (6,946.25 km) |
| Port Huron to Reggello | 4,440.18 mi (7,145.78 km) |
| Port Huron to Reggio di Calabria | 4,845.79 mi (7,798.54 km) |
| Port Huron to Reggio Emilia | 4,363.11 mi (7,021.75 km) |
| Port Huron to Reggiolo | 4,361.88 mi (7,019.77 km) |
