Canyons by UTMB: The Gut Training Breakthrough
WEEKEND RECAP: Consistency Wins in the California Heat
Both Careth Arnold and Genevieve Harrison showed that consistency is king when racing in the canyons. At this event, the story wasn't just the lightning-fast pace, it was the deep preparation.
Careth’s Road to the Podium
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The Result: 2nd Place (100K)
Careth has been entirely open about her past struggles with race-day nutrition, but this weekend proved she has finally cracked the code.
"I don’t normally talk about my race nutrition because I historically haven’t been great at it. But I think I’m starting to get it right. 🙃 I put the effort in this training block to train my gut to be more consistent... I felt so fly."
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The Strategy: She targeted a "sweet spot" of 60g/h, but front-loaded the first 4 hours with 70-80g/h while her digestion was running at maximum efficiency.
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Fighting Palate Fatigue: To avoid the mid-race "sugar ick," she relied on 12x BOOST™ Neutral Gels. By sticking to a flavorless base, she kept her gut happy for the full 100K.
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The Savory Reset: She used Salted Cucumber Drink Mix and one Salted Lemon Gel as a "savory cleanse" between gels to keep her palate fresh and her sodium levels high.
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The Caffeine Kick: While Careth doesn’t consume caffeine on a regular basis, she strategically timed 3x Peach Tea Gels to maintain focus late in the game.
Genevieve’s Steady State
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The Result: 4th Place Overall (100M)
Genevieve focused on ultimate simplicity for her 100-mile journey. She maintained a steady ~75g of carbs/h using BOOST™ gels with electrolytes. Her secret weapon? Alternating the sweetness of gels with the occasional salty crunch of pretzels to reset her palate and maintain gut motility.

Photos : Alice Bourgeois
Canyons Nutrition Breakdown
|
Athlete |
Event |
Carb Intake |
Key Focus |
Winning Product |
|
Careth Arnold |
Canyons 100K |
60-80g/h |
Gut Training & Neutral Base |
|
|
Genevieve Harrison |
Canyons 100M |
75g/h |
Simple & Steady State |