Last Sunday, 10/14 was the last day for the Superior Shuttle. There are other shuttle options shown here
Harriet Quarles is great choice if near Grand Marais (or you are able to pay for here to drive a long way.
Grand Marais to Cook County Road 58 is a not so tough 4.9 miles and very nice
Britton Peak to Oberg Mountain might be the easiest 5.7 mile segment of the trail, although the optional Leveaux Mountain loop is strenuous (but worth it IMO)
Castle Danger To Gooseberry Falls State Park is kinda long (9.1 miles) but very easy hiking except for the initial climb to wolf rock and is a very easy bicycle shuttle
all of the sections west of Two harbors are easy hiking and workable with a bicycle shuttle. I think that one of the transportation options mentioned in the first link in this reply might be able to serve that area but I have no personal experience with those except the Superior Shuttle and Harriet