| Cobh to Jeffersonville (Indiana) | 3,703.26 mi (5,959.82 km) |
| Cobh to Jenison (Michigan) | 3,504.56 mi (5,640.04 km) |
| Cobh to Jenks (Oklahoma) | 4,225.25 mi (6,799.89 km) |
| Cobh to Jennings (Missouri) | 3,868.80 mi (6,226.23 km) |
| Cobh to Jensen Beach (Florida) | 4,006.09 mi (6,447.18 km) |
| Cobh to Jericho (New York) | 3,095.41 mi (4,981.58 km) |
| Cobh to Jerome (Idaho) | 4,560.19 mi (7,338.92 km) |
| Cobh to Jersey City (New Jersey) | 3,120.24 mi (5,021.54 km) |
| Cobh to Jessup (Maryland) | 3,300.06 mi (5,310.93 km) |
| Cobh to Johns Creek (Georgia) | 3,842.45 mi (6,183.83 km) |
| Cobh to Johnson City (New York) | 3,140.09 mi (5,053.49 km) |
| Cobh to Johnson City (Tennessee) | 3,658.74 mi (5,888.18 km) |
| Cobh to Johnston (Iowa) | 3,866.19 mi (6,222.03 km) |
| Cobh to Johnstown (Colorado) | 4,350.02 mi (7,000.68 km) |
| Cobh to Johnstown (Pennsylvania) | 3,337.58 mi (5,371.32 km) |
