| Duncan to Redon | 4,749.43 mi (7,643.46 km) |
| Duncan to Reims | 4,936.20 mi (7,944.05 km) |
| Duncan to Rennes | 4,750.66 mi (7,645.46 km) |
| Duncan to Revel | 5,066.31 mi (8,153.44 km) |
| Duncan to Reze | 4,785.80 mi (7,702.01 km) |
| Duncan to Riedisheim | 5,121.10 mi (8,241.62 km) |
| Duncan to Rillieux-la-Pape | 5,097.99 mi (8,204.42 km) |
| Duncan to Riom | 5,022.97 mi (8,083.69 km) |
| Duncan to Riorges | 5,055.08 mi (8,135.36 km) |
| Duncan to Ris-Orangis | 4,895.39 mi (7,878.37 km) |
| Duncan to Rive-de-Gier | 5,097.66 mi (8,203.89 km) |
| Duncan to Rivesaltes | 5,128.90 mi (8,254.16 km) |
| Duncan to Rixheim | 5,122.53 mi (8,243.92 km) |
| Duncan to Roanne | 5,056.45 mi (8,137.57 km) |
| Duncan to Roche-la-Moliere | 5,089.35 mi (8,190.52 km) |
