| Irthlingborough to Jacksonville (Texas) | 4,688.18 mi (7,544.90 km) |
| Irthlingborough to Jacksonville Beach (Florida) | 4,220.44 mi (6,792.15 km) |
| Irthlingborough to James Island (South Carolina) | 4,038.56 mi (6,499.43 km) |
| Irthlingborough to Jamestown (New York) | 3,570.67 mi (5,746.43 km) |
| Irthlingborough to Jamestown (North Dakota) | 4,056.89 mi (6,528.93 km) |
| Irthlingborough to Janesville (Wisconsin) | 3,916.99 mi (6,303.78 km) |
| Irthlingborough to Jasmine Estates (Florida) | 4,373.55 mi (7,038.54 km) |
| Irthlingborough to Jasper (Alabama) | 4,279.27 mi (6,886.81 km) |
| Irthlingborough to Jasper (Indiana) | 4,043.12 mi (6,506.78 km) |
| Irthlingborough to Jefferson (Georgia) | 4,118.50 mi (6,628.08 km) |
| Irthlingborough to Jefferson (Louisiana) | 4,591.42 mi (7,389.17 km) |
| Irthlingborough to Jefferson City (Missouri) | 4,234.57 mi (6,814.88 km) |
| Irthlingborough to Jefferson Hills (Pennsylvania) | 3,679.60 mi (5,921.74 km) |
| Irthlingborough to Jefferson Valley-Yorktown (New York) | 3,389.32 mi (5,454.59 km) |
| Irthlingborough to Jeffersontown (Kentucky) | 3,998.92 mi (6,435.64 km) |
