| San Gwann to Romeoville (Illinois) | 5,186.16 mi (8,346.31 km) |
| San Gwann to Romulus (Michigan) | 4,961.11 mi (7,984.13 km) |
| San Gwann to Ronkonkoma (New York) | 4,550.77 mi (7,323.75 km) |
| San Gwann to Roosevelt (New York) | 4,576.03 mi (7,364.41 km) |
| San Gwann to Rosamond (California) | 6,676.04 mi (10,744.04 km) |
| San Gwann to Rosaryville (Maryland) | 4,790.77 mi (7,709.99 km) |
| San Gwann to Roscoe (Illinois) | 5,192.57 mi (8,356.63 km) |
| San Gwann to Rose Hill (Virginia) | 4,803.21 mi (7,730.01 km) |
| San Gwann to Roseburg (Oregon) | 6,360.04 mi (10,235.50 km) |
| San Gwann to Rosedale (California) | 6,680.26 mi (10,750.84 km) |
| San Gwann to Rosedale (Maryland) | 4,756.70 mi (7,655.16 km) |
| San Gwann to Roselle (Illinois) | 5,171.73 mi (8,323.09 km) |
| San Gwann to Roselle (New Jersey) | 4,608.20 mi (7,416.18 km) |
| San Gwann to Roselle Park (New Jersey) | 4,608.10 mi (7,416.02 km) |
| San Gwann to Rosemead (California) | 6,715.52 mi (10,807.58 km) |
