| Irthlingborough to River Ridge (Louisiana) | 4,594.09 mi (7,393.47 km) |
| Irthlingborough to Riverbank (California) | 5,258.19 mi (8,462.24 km) |
| Irthlingborough to Riverdale (Georgia) | 4,179.26 mi (6,725.87 km) |
| Irthlingborough to Riverdale (Illinois) | 3,914.56 mi (6,299.87 km) |
| Irthlingborough to Riverside (California) | 5,367.04 mi (8,637.41 km) |
| Irthlingborough to Riverside (Ohio) | 3,867.45 mi (6,224.06 km) |
| Irthlingborough to Riverton (Utah) | 4,823.73 mi (7,763.05 km) |
| Irthlingborough to Riverton (Wyoming) | 4,573.49 mi (7,360.32 km) |
| Irthlingborough to Riverview (Florida) | 4,381.43 mi (7,051.23 km) |
| Irthlingborough to Riverview (Michigan) | 3,720.86 mi (5,988.15 km) |
| Irthlingborough to Riviera Beach (Florida) | 4,342.00 mi (6,987.77 km) |
| Irthlingborough to Riviera Beach (Maryland) | 3,595.22 mi (5,785.95 km) |
| Irthlingborough to Roanoke (Virginia) | 3,820.67 mi (6,148.78 km) |
| Irthlingborough to Roanoke Rapids (North Carolina) | 3,766.63 mi (6,061.80 km) |
| Irthlingborough to Robbinsdale (Minnesota) | 3,962.90 mi (6,377.67 km) |
