| Risca to Roy (Utah) | 4,743.09 mi (7,633.26 km) |
| Risca to Royal Kunia (Hawaii) | 7,168.59 mi (11,536.72 km) |
| Risca to Royal Oak (Michigan) | 3,628.19 mi (5,839.01 km) |
| Risca to Royal Palm Beach (Florida) | 4,255.53 mi (6,848.62 km) |
| Risca to Royse City (Texas) | 4,601.04 mi (7,404.66 km) |
| Risca to Ruskin (Florida) | 4,298.37 mi (6,917.55 km) |
| Risca to Russellville (Alabama) | 4,182.84 mi (6,731.63 km) |
| Risca to Russellville (Arkansas) | 4,360.70 mi (7,017.87 km) |
| Risca to Ruston (Louisiana) | 4,477.78 mi (7,206.28 km) |
| Risca to Rutherford (New Jersey) | 3,337.13 mi (5,370.59 km) |
| Risca to Rutland (Vermont) | 3,175.15 mi (5,109.92 km) |
| Risca to Sabana Grande (Puerto Rico) | 4,130.71 mi (6,647.74 km) |
| Risca to Sachse (Texas) | 4,611.47 mi (7,421.44 km) |
| Risca to Saco (Maine) | 3,075.39 mi (4,949.36 km) |
| Risca to Sacramento (California) | 5,185.94 mi (8,345.97 km) |
