It was supposed to be the trail run of a lifetime—which is saying something, considering Margaret Bradley had conquered the iconic Boston Marathon just months earlier. But Margaret's story is a study in what can go wrong even for the most fit amongst us—and how a lack of preparation and planning can have deadly consequences in the Grand Canyon.

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This telling of Margaret's story was inspired by the work of Christopher Reynolds in the LA Times (read his 2004 story Running Dry here) and Michael Ghiglieri and Dr. Tom Myers in the book Over The Edge: Death In Grand Canyon (purchase here).

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The Rim2Rim Pack from Bright Angel Outfitters is now available! Check out our Canyon-inspired day pack by clicking here.

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To reach Coach Arnie, you can call or text him (yes, really!) at (602) 390-9144 or send him a message on Instagram @painfreearnie.

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Have an idea for the show, or someone you think would be a great guest? Reach out to Brian anytime at [email protected].

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The all-new Grand Canyon Shade Tracker is LIVE!! This incredible interactive tool lets you see when and where you'll have precious shade on your Grand Canyon hike—every hour of every day of the year. Check it out at gcshadetracker.com. Another free resource from Bright Angel Outfitters aimed at making your Grand Canyon adventure the best and safest it can be.

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For Canyon-centric hoodies, sweatshirts & tees—including the Victor Vomit tee and our new Rim-to-Rim collection— please visit BrightAngelOutfitters.com

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For more great Grand Canyon content, please check us out on the following platforms:

YouTube (@GrandCanyonHikerDude) for informative and inspirational videos

Instagram (@GrandCanyonHikerDude) for photos from the trail

TikTok (@GrandCanyonHikerDude) for fun and informative short-form videos

Facebook (@GrandCanyonHikerDude)