| Didcot to Roy (Utah) | 4,803.33 mi (7,730.22 km) |
| Didcot to Royal Kunia (Hawaii) | 7,199.85 mi (11,587.04 km) |
| Didcot to Royal Oak (Michigan) | 3,700.58 mi (5,955.51 km) |
| Didcot to Royal Palm Beach (Florida) | 4,334.02 mi (6,974.93 km) |
| Didcot to Royse City (Texas) | 4,673.19 mi (7,520.77 km) |
| Didcot to Ruskin (Florida) | 4,376.29 mi (7,042.96 km) |
| Didcot to Russellville (Alabama) | 4,257.40 mi (6,851.62 km) |
| Didcot to Russellville (Arkansas) | 4,433.07 mi (7,134.34 km) |
| Didcot to Ruston (Louisiana) | 4,551.47 mi (7,324.88 km) |
| Didcot to Rutherford (New Jersey) | 3,413.02 mi (5,492.73 km) |
| Didcot to Rutland (Vermont) | 3,250.04 mi (5,230.44 km) |
| Didcot to Sabana Grande (Puerto Rico) | 4,209.26 mi (6,774.14 km) |
| Didcot to Sachse (Texas) | 4,683.52 mi (7,537.40 km) |
| Didcot to Saco (Maine) | 3,150.96 mi (5,070.99 km) |
| Didcot to Sacramento (California) | 5,241.95 mi (8,436.11 km) |
