| Irthlingborough to Reidsville (North Carolina) | 3,853.72 mi (6,201.97 km) |
| Irthlingborough to Reisterstown (Maryland) | 3,593.50 mi (5,783.19 km) |
| Irthlingborough to Rendon (Texas) | 4,731.63 mi (7,614.82 km) |
| Irthlingborough to Reno (Nevada) | 5,120.43 mi (8,240.53 km) |
| Irthlingborough to Renton (Washington) | 4,730.67 mi (7,613.28 km) |
| Irthlingborough to Republic (Missouri) | 4,353.43 mi (7,006.17 km) |
| Irthlingborough to Reston (Virginia) | 3,637.96 mi (5,854.72 km) |
| Irthlingborough to Revere (Massachusetts) | 3,229.36 mi (5,197.16 km) |
| Irthlingborough to Rexburg (Idaho) | 4,637.83 mi (7,463.87 km) |
| Irthlingborough to Reynoldsburg (Ohio) | 3,807.47 mi (6,127.53 km) |
| Irthlingborough to Rialto (California) | 5,356.57 mi (8,620.57 km) |
| Irthlingborough to Richardson (Texas) | 4,691.13 mi (7,549.64 km) |
| Irthlingborough to Richfield (Minnesota) | 3,968.25 mi (6,386.27 km) |
| Irthlingborough to Richfield (Wisconsin) | 3,862.44 mi (6,215.99 km) |
| Irthlingborough to Richland (Washington) | 4,720.85 mi (7,597.48 km) |
