| Idanha-a-Nova to Jacksonville (Texas) | 4,751.68 mi (7,647.09 km) |
| Idanha-a-Nova to Jacksonville Beach (Florida) | 4,126.39 mi (6,640.78 km) |
| Idanha-a-Nova to James Island (South Carolina) | 3,965.91 mi (6,382.51 km) |
| Idanha-a-Nova to Jamestown (New York) | 3,641.14 mi (5,859.84 km) |
| Idanha-a-Nova to Jamestown (North Dakota) | 4,347.42 mi (6,996.49 km) |
| Idanha-a-Nova to Janesville (Wisconsin) | 4,073.71 mi (6,556.00 km) |
| Idanha-a-Nova to Jasmine Estates (Florida) | 4,264.71 mi (6,863.38 km) |
| Idanha-a-Nova to Jasper (Alabama) | 4,292.04 mi (6,907.38 km) |
| Idanha-a-Nova to Jasper (Indiana) | 4,118.45 mi (6,628.00 km) |
| Idanha-a-Nova to Jefferson (Georgia) | 4,101.10 mi (6,600.08 km) |
| Idanha-a-Nova to Jefferson (Louisiana) | 4,579.22 mi (7,369.53 km) |
| Idanha-a-Nova to Jefferson City (Missouri) | 4,357.69 mi (7,013.02 km) |
| Idanha-a-Nova to Jefferson Hills (Pennsylvania) | 3,725.40 mi (5,995.45 km) |
| Idanha-a-Nova to Jefferson Valley-Yorktown (New York) | 3,402.99 mi (5,476.59 km) |
| Idanha-a-Nova to Jeffersontown (Kentucky) | 4,059.58 mi (6,533.26 km) |
