Nutrition for Mountain Athletes
Nutrition is the work of fueling the training. Whether you are heading out for a long day on trail, a multi-day trek, a race, or a season of consistent work, your fueling decides how the body shows up and how it recovers.
At Uphill Athlete, Alyssa Leib, RD, M.S., works one-to-one with mountain athletes on daily fueling, performance and event nutrition, RED-S and under-fueling, and a relationship with food that fuels the work instead of fighting it.
Nutrition for Mountain Athletes
Nutrition is the work of fueling the training. Whether you are heading out for a long day on trail, a multi-day trek, a race, or a season of consistent work, your fueling decides how the body shows up and how it recovers.
At Uphill Athlete, Alyssa Leib, RD, M.S., works one-to-one with mountain athletes on daily fueling, performance and event nutrition, RED-S and under-fueling, and a relationship with food that fuels the work instead of fighting it.
Nutrition for Mountain Athletes
Nutrition is the work of fueling the training. Whether you are heading out for a long day on trail, a multi-day trek, a race, or a season of consistent work, your fueling decides how the body shows up and how it recovers.
At Uphill Athlete, Alyssa Leib, RD, M.S., works one-to-one with mountain athletes on daily fueling, performance and event nutrition, RED-S and under-fueling, and a relationship with food that fuels the work instead of fighting it.
The importance of nutrition and training
The hardest moments in mountain training are often nutrition moments. The hut day that ended with you bonking three hours from camp. The race that fell apart mid-effort because the fueling did not hold. The training block that produced no adaptation because you were not eating enough. The relationship with food that has slowly stopped feeling like fueling and started feeling like a calculation. None of that is separate from training. It is part of the work. It can be coached.
Alyssa Leib is a Registered Dietitian with an M.S. in human nutrition and a decade of experience in health and nutrition research. She is also a trail runner and rock climber, which is to say she has lived the question her work answers: how do you eat to do the things you actually want to do? Sessions are remote, with biweekly meetings and steady contact in between. The work covers daily fueling, performance and event nutrition, RED-S and under-fueling, and the relationship with food that holds up across decades. The goal is a way of fueling that does its job, day after day, and gets out of the way of the rest of your life.
Education
The Dangers of Underfueling for Endurance Athletes
How to Choose Safe and Effective Products
Should Endurance Athletes Use Supplements?
Nutrition Strategies to Aid Recovery for Mountain Athletes
How to Eat for Recovery: Nutrition Strategies for Mountain Athletes
Supplements for Mountain and Endurance Athletes: What Works, What Doesn’t, and How to Choose Safely
Your Diet Sucks x Uphill Athlete
Should Endurance Athletes Train Fasted? What the Research Shows
Nutrition for Mountain and Endurance Athletes: What to Eat, When to Eat, and Common Mistakes to Avoid
Fasted Training, Fat Oxidation, and Low-Carb, High-Fat Diets
Thinking about training?
Nutrition coaching is the right path when the work is bigger than a single conversation: under-fueling and RED-S, body composition through life-stage transitions, or the methodological work of rebuilding a relationship with food that supports your training. Biweekly meetings, steady contact in between, individualized to your training and your goals. 100% money-back guarantee at 12 weeks.
If you are not sure which one fits, start with the consult call. Alyssa will tell you honestly whether one session is enough or whether ongoing coaching is the right next step.
Train Your Way
Do you want 1:1 Support?
Nutrition Coaching
Alyssa Leib, MS, RD, combines her academic knowledge with her personal experiences and outdoor adventures, making her a relatable and credible source of nutritional guidance for athletes and outdoor enthusiasts.
Alyssa’s commitment to providing evidence-based recommendations is unwavering. Her approach to nutrition is holistic, recognizing that a healthy relationship with food is just as crucial as physical health and athletic achievement.
Looking for a way to take out the guesswork?
Training Groups
Training Groups are built for athletes who want guidance, accountability, and clarity through coach Q&As, expert lectures, and a private WhatsApp for athletes.
Rather do it on your own?
Training Plans
Built for mountain athletes who want to train independently.
100 Mile Mountain Ultra
Rock Climbing Add-On
Beginner Mountain Fitness
Big Vert Ultra Marathon
Intro to Ultra Marathons
Intermediate-Advanced Mountain Fitness
Focus on the basics?
Programs
Strength and recovery made easy. On-demand video guidance for mountain athletes.
Yoga for Recovery
Chamonix Mountain Fit
The Uphill Athlete approach to training.
Training is more than just working out.
Our evidence-based approach looks beyond exercise alone. It accounts for sleep, stress, nutrition, and the demands of real life while progressively building sport-specific fitness on top of base aerobic endurance.
This methodology has helped thousands of people move better, last longer, and go farther. From Everest summits to first finish lines, the principles are the same.
If you’re ready to build true mountain fitness, this is where it begins.
Need help deciding?
Buy a one-time consult with one of our coaches, physical therapists, or registered dietitians to find out what option is best for you. There’s no obligation, just real advice.