| Duncan to Ruislip | 4,686.05 mi (7,541.47 km) |
| Duncan to Runcorn | 4,544.36 mi (7,313.44 km) |
| Duncan to Rushall | 4,595.70 mi (7,396.07 km) |
| Duncan to Rushden | 4,656.68 mi (7,494.21 km) |
| Duncan to Rustington | 4,708.33 mi (7,577.33 km) |
| Duncan to Rutherglen | 4,418.38 mi (7,110.69 km) |
| Duncan to Ryde | 4,685.74 mi (7,540.97 km) |
| Duncan to Rye | 4,750.91 mi (7,645.85 km) |
| Duncan to Ryhope | 4,547.67 mi (7,318.77 km) |
| Duncan to Saffron Walden | 4,696.90 mi (7,558.93 km) |
| Duncan to Saint Albans | 4,683.89 mi (7,537.99 km) |
| Duncan to Saint Andrews | 4,453.75 mi (7,167.62 km) |
| Duncan to Saint Austell | 4,555.65 mi (7,331.60 km) |
| Duncan to Saint Budeaux | 4,577.69 mi (7,367.08 km) |
| Duncan to Saint Helens | 4,540.49 mi (7,307.21 km) |
