The Bay de Noc/Grand Island Trail is a 39+ mile trail that parallels the Whitefish River, starting from 1/2 to 2 miles east of the river. The trail follows the approximate location of an ancient Chippewa Indian portage route used to carry canoes and supplies between Lake Superior and Lake Michigan. Following the river bluff for a considerable distance, it offers hikers, bikers and horse riders many extended views to the west across the Whitefish River Valley.

The Adventure Hiking Trail is a rugged loop through the limestone hills of southern Indiana, taking in hardwood forest, cliff views, and creeks, seldom missing the chance for a big climb or descent. It is a challenge in any season, though probably most runnable from late fall through late spring. The trail is well marked and generally well maintained, though there are plenty of opportunities for wrong turns, and wind and ice storms can drop trees on the trail any time of year.

This unusual challenge was posted by Peter Hubbard:

Scotty Kummer posted:

"Between June 30, 2013 and July 7, 2013, Shan Riggs ran across the State of Illinois (Supported) from Brookport, IL to the Wisconsin Border at HWY 45.  A total of 410 miles in 6 days, 18 hours, 26 minutes.  Chuck Schultz also completed the route (unsupported) in 7 days, 5 hours and 28 minutes."

Likely he means "self supported" rather than "unsupported".  Note that we do not know if these are FKTs - possibly some TransCon runners have gone faster?

The Wisconsin Explorer blog describes Lake Geneva Shore Path this way:

"The Lake Geneva Lake Shore Path is a 21 mile trail of clever, unique, and unforgettable hiking. It is a 2 foot wide single track footpath encircling Geneva Lake that meanders through the yards of historic and modern estates.

http://www.borderroutetrail.org/

The Minnesota DNR describes the Arrowhead Trail:

"The 135 mile David Dill/Arrowhead State Trail extends from the intersection with the Taconite State Trail (near Tower) to three miles south of International Falls. The natural surface trail is used primarily for snowmobiling.

The Run Across Indiana route is an open course route. Because of the state's geography, you may choose any route that connects the eastern and western borders of the state. The shortest possible route will be in the range of 150 miles, but all things considered, a preferred route is likely to be a little longer. The route shown on the map is for illustration purposes only; it is not the route that Andy Bauermeister ran in 2014, and it is not a recommended route.

https://mostateparks.com/trails/st-francois-state-park?type=backpacking