| Diamond Bar to Roy (Utah) | 587.28 mi (945.14 km) |
| Diamond Bar to Royal Kunia (Hawaii) | 2,590.13 mi (4,168.41 km) |
| Diamond Bar to Royal Oak (Michigan) | 1,954.95 mi (3,146.19 km) |
| Diamond Bar to Royal Palm Beach (Florida) | 2,283.98 mi (3,675.71 km) |
| Diamond Bar to Royse City (Texas) | 1,238.58 mi (1,993.31 km) |
| Diamond Bar to Ruskin (Florida) | 2,133.04 mi (3,432.80 km) |
| Diamond Bar to Russellville (Alabama) | 1,712.30 mi (2,755.68 km) |
| Diamond Bar to Russellville (Arkansas) | 1,402.03 mi (2,256.35 km) |
| Diamond Bar to Ruston (Louisiana) | 1,454.54 mi (2,340.86 km) |
| Diamond Bar to Rutherford (New Jersey) | 2,419.07 mi (3,893.12 km) |
| Diamond Bar to Rutland (Vermont) | 2,471.61 mi (3,977.67 km) |
| Diamond Bar to Sabana Grande (Puerto Rico) | 3,305.88 mi (5,320.30 km) |
| Diamond Bar to Sachse (Texas) | 1,223.64 mi (1,969.27 km) |
| Diamond Bar to Saco (Maine) | 2,597.60 mi (4,180.43 km) |
| Diamond Bar to Sacramento (California) | 375.44 mi (604.21 km) |
