| Didcot to Robertsville (New Jersey) | 3,441.52 mi (5,538.60 km) |
| Didcot to Robinson (Texas) | 4,783.15 mi (7,697.73 km) |
| Didcot to Robstown (Texas) | 4,995.79 mi (8,039.94 km) |
| Didcot to Rochester (Michigan) | 3,691.33 mi (5,940.61 km) |
| Didcot to Rochester (Minnesota) | 3,983.87 mi (6,411.41 km) |
| Didcot to Rochester (New Hampshire) | 3,181.68 mi (5,120.42 km) |
| Didcot to Rochester (New York) | 3,454.06 mi (5,558.77 km) |
| Didcot to Rochester Hills (Michigan) | 3,693.73 mi (5,944.48 km) |
| Didcot to Rock Hill (South Carolina) | 3,963.97 mi (6,379.39 km) |
| Didcot to Rock Island (Illinois) | 4,033.25 mi (6,490.89 km) |
| Didcot to Rock Springs (Wyoming) | 4,688.42 mi (7,545.29 km) |
| Didcot to Rockford (Illinois) | 3,938.83 mi (6,338.93 km) |
| Didcot to Rockledge (Florida) | 4,274.70 mi (6,879.47 km) |
| Didcot to Rocklin (California) | 5,221.60 mi (8,403.35 km) |
| Didcot to Rockport (Texas) | 4,959.78 mi (7,981.99 km) |
