Fastest Known Time - FKT and Merrell Test Lab

The best routes: what are they, who did them, and how fast?

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Tracking Now

FKT attempts we're tracking right now. Follow their progress »

Athlete Route Start date Style Status
Billy "Wahoo" Meredith Triple Crown of Thru-Hiking (USA) Self-supported In progress
Jenny Hoffman Trans America Run (USA) Supported Complete - New FKT!
Michael Mcknight Arizona Trail (AZ) Supported DNF
Cole Crosby Bay Circuit Trail (MA) Supported Complete - New FKT!
Suzanne "Sunny" Stroeer Arizona Trail (AZ) Supported DNF
Callie Vinson Maricopa Loop (AZ) Supported Complete - New FKT!

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Latest FKTs



  • jamesfro:
    I will be attempting the unsupported out and back FKT on 5/16/23. Looking forward to it!
  • Lauren Hendrickson:
    There is a new detour at Deam Lake, the sign said okay on weekends so I followed the KT this weekend but have followed the alt route before and generally horse trail/gravel. 
  • Nathan Szabados:
    Went on a reconnoiter run yesterday ( in a tad over 34 minutes. This has got to be one of the best-marked trails I've ever run on--every time I looked up, there were 5 markings in sight. Couldn't… read more »
  • mrmribbit:
    This is awesome! Really impressive pace on those trails. I’m hoping to run this route next weekend (female, self-supported) - did you use the gpx of the route on your watch to navigate? Or were you able to follow long without it? Any other tips are… read more »
  • Conor Dietrich:
    Thinking about going for this FKT some weekend in June. Did you guys ever have to filter water? Or were you able to swing by campgrounds on the way enough to re-fill? Thanks for any info you're willing to share! I appreciate it!