| Idanha-a-Nova to Jeffersonville (Indiana) | 4,061.51 mi (6,536.37 km) |
| Idanha-a-Nova to Jenison (Michigan) | 3,922.65 mi (6,312.89 km) |
| Idanha-a-Nova to Jenks (Oklahoma) | 4,629.00 mi (7,449.65 km) |
| Idanha-a-Nova to Jennings (Missouri) | 4,263.43 mi (6,861.33 km) |
| Idanha-a-Nova to Jensen Beach (Florida) | 4,177.49 mi (6,723.02 km) |
| Idanha-a-Nova to Jericho (New York) | 3,404.13 mi (5,478.42 km) |
| Idanha-a-Nova to Jerome (Idaho) | 5,144.75 mi (8,279.67 km) |
| Idanha-a-Nova to Jersey City (New Jersey) | 3,431.47 mi (5,522.42 km) |
| Idanha-a-Nova to Jessup (Maryland) | 3,606.27 mi (5,803.73 km) |
| Idanha-a-Nova to Johns Creek (Georgia) | 4,134.44 mi (6,653.74 km) |
| Idanha-a-Nova to Johnson City (New York) | 3,485.71 mi (5,609.71 km) |
| Idanha-a-Nova to Johnson City (Tennessee) | 3,966.71 mi (6,383.80 km) |
| Idanha-a-Nova to Johnston (Iowa) | 4,317.88 mi (6,948.96 km) |
| Idanha-a-Nova to Johnstown (Colorado) | 4,857.72 mi (7,817.74 km) |
| Idanha-a-Nova to Johnstown (Pennsylvania) | 3,675.96 mi (5,915.89 km) |
