Some through trails I have done on foot and/or bicycle (at least a part of)
Appalachian Trail (Springer Mt, Georgia to Mt Katahdin, Maine) 908 of 2200 miles
Long Path (175 St A train Station to ? (end and length in flux)) 275 miles
Empire State Path (all over New York) 307 of 750 miles
I am happier about what I have left to do than what I have already done.