| Risca to Reidsville (North Carolina) | 3,766.49 mi (6,061.58 km) |
| Risca to Reisterstown (Maryland) | 3,507.69 mi (5,645.07 km) |
| Risca to Rendon (Texas) | 4,657.22 mi (7,495.07 km) |
| Risca to Reno (Nevada) | 5,080.57 mi (8,176.39 km) |
| Risca to Renton (Washington) | 4,702.97 mi (7,568.69 km) |
| Risca to Republic (Missouri) | 4,280.43 mi (6,888.68 km) |
| Risca to Reston (Virginia) | 3,551.94 mi (5,716.29 km) |
| Risca to Revere (Massachusetts) | 3,142.76 mi (5,057.78 km) |
| Risca to Rexburg (Idaho) | 4,593.42 mi (7,392.39 km) |
| Risca to Reynoldsburg (Ohio) | 3,727.73 mi (5,999.21 km) |
| Risca to Rialto (California) | 5,307.59 mi (8,541.74 km) |
| Risca to Richardson (Texas) | 4,616.60 mi (7,429.70 km) |
| Risca to Richfield (Minnesota) | 3,905.63 mi (6,285.51 km) |
| Risca to Richfield (Wisconsin) | 3,792.49 mi (6,103.43 km) |
| Risca to Richland (Washington) | 4,688.27 mi (7,545.03 km) |
