Mike Robinson posted the route:

Today I ran Kinsman Ridge Trail from North to South and am posting my time as a current FKT at 5 Hours 4 minutes.

The standard route is up Blueberry Ledge to the summit of Whiteface, across the Rollins Trail to the summit of Passaconway then down Dicey's Mill. Route starts and finishes at the parking lot. It is about 11 miles.  (Ben Nephew did an extended route that he explains on the page for his FKT.)  There is a Strava segment for the route.

Jeff List provided some info on this challenge:

WMNF = White Mountain National Forest (New Hampshire)
AMC = Appalachian Mountain Club
redline = taking the AMC maps of the Whites and marking all trails with red marker until you've done every last one.

Ben Nephew posted:

NOTE:  This trail is no longer legally doable & we will not record any further FKTs.  We keep the route for the sake of completeness.  Do the New England Trail instead.

The Metacomet-Monadnock Trail (M&M Trail) is a 114-mile (183 km) hiking trail that traverses the Metacomet Ridge of the Pioneer Valley region of Massachusetts and the central uplands of Massachusetts and southern New Hampshire.

Ben Nephew posted the route:

The Tully Trail is an isolated trail loop in North Central Massachusetts.

www.thetrustees.org/assets/documents/places-to-visit/trailmaps/Tully-Trail-Map.pdf

More information on the property can be found here:

The Belknap Range is a small range of summits in southern New Hampshire, near Lake Winnipesaukee. The peaks range from 1660' to 2382'. Various routes have been used to link these summits.

Josh Burns posted: