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Ultra runner John Lacroix in his Haeleum Celan training shirt - high performance insect shield apparelSherpa John Lacroix

“Sherpa” John Lacroix has a B.S. in Outdoor Education and when not involved with Ultra-Running, he works in Boulder as a Professional Guide and a Corporate Adventure Trainer. As an adventure documentary film-maker he is best known for his work on “48″ and is currently producing various new projects. He has hosted a popular adventure and ultra-running blog “Sherpa John: Human Potential” since 2007.

Sherpa John spent the first 30 years of his life in New Hampshire. As a peak-bagger and adventurer in NH’s White Mountains, he successfully completed the AMC 4000 Footer Club list numerous times, including in the Winter season, and is the youngest finisher of the challenging TrailWrights 72 peak bagging list. Sherpa John transformed from peak-bagger to trail runner in 2004 and started running ultramarathons in 2005. Since then he has completed over 40 official ultra-marathons and over a dozen other ultra-distance Journey Run and Fat Ass events.

In 2008 Sherpa John became the first and only person to have ever run 125 miles non-stop across New Hampshire’s widest point. He was the Race Director of the inaugural New England 200 Mile Ultra (now Peak Ultra 50/100/200/500 Races) and is a co-founder of the original (Spartan) Pittsfield Death Race. You can read his entertaining race reports and raw insights on his blog.