| Boulder to Ruislip | 4,666.22 mi (7,509.56 km) |
| Boulder to Runcorn | 4,516.37 mi (7,268.39 km) |
| Boulder to Rushall | 4,571.82 mi (7,357.63 km) |
| Boulder to Rushden | 4,631.15 mi (7,453.12 km) |
| Boulder to Rustington | 4,695.47 mi (7,556.63 km) |
| Boulder to Rutherglen | 4,371.76 mi (7,035.67 km) |
| Boulder to Ryde | 4,675.93 mi (7,525.18 km) |
| Boulder to Rye | 4,732.43 mi (7,616.10 km) |
| Boulder to Ryhope | 4,501.49 mi (7,244.46 km) |
| Boulder to Saffron Walden | 4,670.82 mi (7,516.95 km) |
| Boulder to Saint Albans | 4,662.15 mi (7,503.01 km) |
| Boulder to Saint Andrews | 4,398.27 mi (7,078.33 km) |
| Boulder to Saint Austell | 4,561.82 mi (7,341.54 km) |
| Boulder to Saint Budeaux | 4,581.24 mi (7,372.79 km) |
| Boulder to Saint Helens | 4,511.56 mi (7,260.66 km) |
