| Didcot to Rancho Cordova (California) | 5,235.15 mi (8,425.16 km) |
| Didcot to Rancho Cucamonga (California) | 5,374.01 mi (8,648.63 km) |
| Didcot to Rancho Mirage (California) | 5,357.07 mi (8,621.37 km) |
| Didcot to Rancho Palos Verdes (California) | 5,420.92 mi (8,724.12 km) |
| Didcot to Rancho San Diego (California) | 5,430.06 mi (8,738.83 km) |
| Didcot to Rancho Santa Margarita (California) | 5,403.06 mi (8,695.39 km) |
| Didcot to Randallstown (Maryland) | 3,586.66 mi (5,772.16 km) |
| Didcot to Rantoul (Illinois) | 3,995.55 mi (6,430.21 km) |
| Didcot to Rapid City (South Dakota) | 4,359.36 mi (7,015.71 km) |
| Didcot to Ravenna (Ohio) | 3,685.57 mi (5,931.35 km) |
| Didcot to Raymondville (Texas) | 5,069.59 mi (8,158.72 km) |
| Didcot to Raymore (Missouri) | 4,308.40 mi (6,933.69 km) |
| Didcot to Raytown (Missouri) | 4,299.17 mi (6,918.85 km) |
| Didcot to Reading (Ohio) | 3,900.40 mi (6,277.09 km) |
| Didcot to Reading (Pennsylvania) | 3,508.19 mi (5,645.88 km) |
