Fueling Tom Evans and Ruth Croft's Victories at UTMB: Inside Elite Ultra Nutrition with Paul Booth

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This week on the podcast Mikki chats to Paul Booth, sports nutritionist and exercise physiologist who helped lead Ruth Croft and Tom Evans to victory at the UTMB race in 2025, just gone. Mikki and Paul chat about his background, his thoughts on the 120g of carbs that some athletes are pushing (and subsequently his PhD research is studying) and the specific strategies used by both Tom Evans and Ruth Croft in the 100 mile iconic race. They also discuss other nutritional strategies, how these may relate to age group and midlife athletes.

Paul Booth is a sports nutritionist and exercise physiologist with a specialist focus on ultra-endurance performance. With over 20 years of experience in academia and applied practice, Paul has worked extensively with elite and amateur endurance athletes to optimise fueling, recovery, and race strategies.

He is the Lead Nutritionist for the Salomon International Team and consults with athletes across trail, ultra-running, and endurance sports. His research and practice centre on translating laboratory findings into practical approaches that account for the individual demands of athletes in real-world competition.

As a PhD researcher, Paul’s academic work investigates metabolism and nutrition in ultra-running. He has completed more than 80 ultramarathons and over 150 endurance events across disciplines including trail running, cycling, Ironman, and ski mountaineering. His combination of scientific expertise and personal experience allows him to provide grounded, evidence-based strategies tailored to the unique challenges of endurance sport.

https://www.instagram.com/ultra.endurance.nutritionist/

https://performancegainsnutrition.com/

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