| Delaware to Jeffersonville (Indiana) | 194.53 mi (313.07 km) |
| Delaware to Jenison (Michigan) | 230.26 mi (370.56 km) |
| Delaware to Jenks (Oklahoma) | 760.03 mi (1,223.15 km) |
| Delaware to Jennings (Missouri) | 398.09 mi (640.67 km) |
| Delaware to Jensen Beach (Florida) | 915.49 mi (1,473.34 km) |
| Delaware to Jericho (New York) | 501.51 mi (807.10 km) |
| Delaware to Jerome (Idaho) | 1,626.20 mi (2,617.12 km) |
| Delaware to Jersey City (New Jersey) | 473.86 mi (762.61 km) |
| Delaware to Jessup (Maryland) | 343.67 mi (553.08 km) |
| Delaware to Johns Creek (Georgia) | 436.39 mi (702.31 km) |
| Delaware to Johnson City (New York) | 390.75 mi (628.85 km) |
| Delaware to Johnson City (Tennessee) | 275.12 mi (442.76 km) |
| Delaware to Johnston (Iowa) | 563.46 mi (906.80 km) |
| Delaware to Johnstown (Colorado) | 1,149.42 mi (1,849.81 km) |
| Delaware to Johnstown (Pennsylvania) | 218.91 mi (352.31 km) |
