| Thornton to Romeoville (Illinois) | 3,841.86 mi (6,182.87 km) |
| Thornton to Romulus (Michigan) | 3,637.32 mi (5,853.69 km) |
| Thornton to Ronkonkoma (New York) | 3,307.50 mi (5,322.91 km) |
| Thornton to Roosevelt (New York) | 3,331.24 mi (5,361.11 km) |
| Thornton to Rosamond (California) | 5,234.48 mi (8,424.08 km) |
| Thornton to Rosaryville (Maryland) | 3,547.66 mi (5,709.41 km) |
| Thornton to Roscoe (Illinois) | 3,836.86 mi (6,174.83 km) |
| Thornton to Rose Hill (Virginia) | 3,557.81 mi (5,725.74 km) |
| Thornton to Roseburg (Oregon) | 4,896.97 mi (7,880.91 km) |
| Thornton to Rosedale (California) | 5,234.59 mi (8,424.26 km) |
| Thornton to Rosedale (Maryland) | 3,508.85 mi (5,646.95 km) |
| Thornton to Roselle (Illinois) | 3,824.50 mi (6,154.95 km) |
| Thornton to Roselle (New Jersey) | 3,359.10 mi (5,405.95 km) |
| Thornton to Roselle Park (New Jersey) | 3,358.79 mi (5,405.45 km) |
| Thornton to Rosemead (California) | 5,276.48 mi (8,491.68 km) |
