If I were to nominate a replacement for this list it would be the sequence of four trails in Wisconsin: 400 Trail, Ellroy-Sparta Trail, La Crosse River Trail and Great River Trail.
I found the Northern Trail OK but underwhelming and not really in the same category as the other two. If I were to nominate a replacement for this list it would be the sequence of four trails in Wisconsin: 400 Trail, Ellroy-Sparta Trail, La Crosse River Trail and Great River Trail. These can link together in a ~140 mile sequence.