3h 14m 20s
From Clear Lake Trail Head at the beginning of the trail to the end (26.5) parking lot.
3:14:20 running time, I didn't realize there was a verified route on this FKT until I saw it recently. I looked back to 2016 when I ran the Mckenzie trail with a friend after our conference track championship. We had some stops so the 3:14:20 is the total time verified on Strava flyby including stops where our watches weren't running. Fun day with a pack and a few sport beans. We added on from the parking lot after we finished to get over 25. The watch had slow to 24 miles instead of the 26.5.