As announced, I attempted a solo and unsupported FKT of the 165 mile Ozark Highlands Trail on Thu, Dec 14, 2017. I finished on Sun, Dec 17, 2017, in 70:01:16 hours (2 days 22h 1min). I started at Lake Ft. Smith State Park and finished in Woolum.
Strava track: www.strava.com/activities/1319107456/overview
SPOT adventure: www.findmespot.com/spotadventures/index.php/view_adventure?tripid=354308
Teuscher made an attempt in early 2017, but failed as reported here: www.christofteuscher.com/aagaa/report-1st-failed-unsupported-ozark-highlands-trail-fkt-attempt