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Mount Rainier is not the place where you get to switch your brain off and “just suffer.” The route moves, the glacier breathes, and a boot pack that looked safe two days ago can point straight at a crevasse. That’s why Simon Kearns’ new Mount Rainier round trip on-foot FKT, 3:43:50 car to car, stopped us in our tracks. 

Simon is an RMI Expeditions mountain guide and a rising name in mountain running and skyrunning, with speed records that include Mount Hood and a recent fastest time on Mailbox Peak. We talk through the real story behind the Rainier effort: a last-minute pivot away from a ski record attempt after snapping a race ski, the advantage and responsibility that comes with doing route work on the mountain, and how he stays sharp when the terrain demands both speed and precision. If you’ve ever wondered what “dialing a route” means on snow and ice, this conversation makes it concrete. 

We also get into how he trains around guiding logistics, why he works with Jackson Cole as a coach, and how he thinks about the balance between lonely FKT projects and the energy of racing. Along the way we swap notes on the Pacific Northwest volcano scene, European skyrunning culture in Chamonix, and what it looks like to pursue the AMGA and IFMGA guiding path while still chasing big athletic goals. 

If you like FKTs, alpine running, mountaineering strategy, and honest talk about risk, training, and motivation, hit play. Subscribe, share this with a mountain friend, and leave a review so more people can find the show.

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