Weight Loss and Nutrition for Cycling

Done at the right time and in the right way, weight loss helps your cycling in two ways. Your power to weight ratio improves, and a lighter, leaner body tends to recover better between hard days.

Done the wrong way, it costs you both. The most common mistake I see is the rider who cuts calories by cutting fuel on the bike, then wonders why intervals feel harder and the final hour of every ride fades. This guide covers when to lose weight, how big a deficit to run, what to eat, and how to keep your training quality high while the scale moves.

Replay Watch the replay: weight loss and nutrition for cycling Ask a FasCat Ep. 44, recorded live on October 9, 2026. Frank covers how to strategically and safely lose weight this off-season, then answers questions from the chat. Watch the replay on YouTube

Step 1: choose the right time of year

Timing matters more than any food choice. A calorie deficit lowers how much work you can absorb and how well you recover from it. That is a fair trade when training is easy and a bad one when it is hard.

If you want a longer runway, the off-season plans in CoachCat are built for exactly this window, and the 10 week Weight Lifting for Cycling plan helps you keep muscle while the weight comes off.

Step 2: fuel the ride, take the deficit everywhere else

This is the biggest change in how we think about weight loss for cyclists. The old advice was to ride easy and burn fat. The current approach is different: match the fuel to the work on the bike, then create the deficit with the rest of your day.

Fat loss does not depend on the fuel you burn during a ride. It depends on your total energy balance over days and weeks. Under-eating on the bike does not burn extra fat in any way that matters. It just lowers your power, raises your perceived effort, and leaves you hungry enough to overeat that night.

FuelTrix tells you exactly what the ride needs

CoachCat's FuelTrix feature puts a carbohydrate target on every workout on your calendar, in grams per hour, based on how hard the ride is and how long it lasts. A Fuel Your Ride panel turns the number into bottles and gels and tells you when to start eating. There is nothing to set up.

The fuel target on every workout card, and the Fuel Your Ride panel that turns it into bottles and gels.

For weight loss, the point is simple. Hit the number on the card, including in the first hour when you are not hungry yet. Then the calories you save come from lighter dinners on easy days, fewer liquid calories, less snacking, and less alcohol. Not from the bottle on your bike. Recovery rides read 0 grams per hour, so on those days the saving is built in.

Want to know how the numbers work, which sugars to match to which target, and which products deliver them? Read the full breakdown: FuelTrix: how many carbs per hour to eat, on every workout.

Included in CoachCat

2 meal plans that take the guesswork out of eating

Both meal plans come with your CoachCat subscription, at no extra cost. Pick the one that fits your goal.

Weight Loss Meal Plan Recipes and meal prep built around your training, your weight, and your goals, so you lose weight without losing watts. See the weight loss plan Winning in the Kitchen Meal Plan 4 weeks, 9 recipes that take 10 minutes or less, snacks, and a flex day for when life happens. Designed by a registered dietitian. See the meal plan

Step 3: set a deficit you can train on

A crash diet is the fastest way to lose a few pounds and a lot of fitness. Research on athletes consistently finds that slower weight loss preserves more lean mass and strength than faster loss.¹ My rule is the same as it was in 2022, with a little more flexibility:

• Run a deficit of 300 to 500 calories per day. That works out to about 0.5 to 1 lb per week for most riders.
• Treat about 1% of body weight per week as the ceiling. Faster than that and your power and recovery drop.
• Keep the block short and specific. 8 to 12 weeks is plenty, and a few pounds is a realistic target for most riders.

Your power meter gives you a useful reality check. On the bike, 1 kilojoule of work is roughly 1 calorie of food burned. A 1,000 kJ ride is about a burrito. A 2,000 kJ ride burns about 2 burritos, and one unplanned snack session at home can erase it. Deciding the post-ride meal ahead of time is the simplest way to protect the deficit.

Step 4: protect muscle with protein and strength work

When you eat less, your body will happily burn some muscle along with the fat unless you give it a reason not to. Two things give it that reason.

Eat enough protein, and spread it out

For building muscle with strength training, the benefit levels off at intakes around 1.6 g per kilogram of body weight per day.² The old guideline of 1.2 to 2.0 g per kilogram still stands as the range for athletes,³ and during a deficit most sports dietitians aim for the middle to upper end of it. In pounds, that is roughly 0.7 to 1 g per pound per day.

Split it across 3 to 4 meals, each with a solid serving of protein (roughly 0.3 g per kilogram per meal). A protein source also helps you feel full for longer, which makes the deficit easier to live with.

Lift something

Strength training tells your body to keep muscle while it loses fat. That matters for every rider and matters more with age. If you are a Masters athlete, CoachCat now adjusts your coaching by age, so add your birthday to your profile and the plan will reflect it.

Step 5: use carbohydrate on purpose, not by accident

Do not go low carb on your hard days. Intervals and long rides run on carbohydrate, and cutting it is the quickest route to flat legs and a worse workout. The idea behind modern carbohydrate periodization is to fuel for the work required:⁴ more carbohydrate on hard days, less on easy and rest days.

Step 6: eat real food, and make it easy

The foods I recommended in 2022 still hold up. The categories are simple.

Go slow: eat these less often

• Foods and drinks with added sugar, except right before, during, and after training
• Ultra-processed snacks and "low-fat" packaged foods, which are often high in added sugar
• Fried foods and large portions of red meat, cheese, and butter
• Alcohol, which adds calories, disrupts sleep, and slows recovery

Go fast: eat these more often

• Complex carbohydrates: sweet potatoes, quinoa, brown or white rice, oats
• Lean protein: chicken, fish, eggs, Greek yogurt, tofu, beans
• Fruit and vegetables at every meal, including dark leafy greens
• The post-ride burrito, with rice, vegetables, and a good protein source
• Carbs plus protein or fat for snacks, such as a banana with peanut butter or carrots with hummus, so you stay full longer

Two habits help more than any food list. Wait 20 minutes before going back for seconds, which gives your fullness signals time to catch up. And read the back label. Added sugars and sweeteners hide in plenty of foods that look healthy on the front.

Let CoachCat plan the week

Knowing what to eat is easy. Having the right food ready on a Wednesday night is hard. CoachCat does more than provide workouts. It plans your meals, tells you what to eat on the bike, and answers nutrition questions from weight loss to fueling a gravel race.

Step 7: know when to back off

Cutting too deep has a name. Relative energy deficiency in sport, or REDs, happens when your energy intake does not cover what training and daily life demand. It affects performance and health, and it affects both men and women.⁵ Back off the deficit and eat more if you notice any of these:

• Your power drops or workouts feel harder than they should at the same effort
• You sleep badly, feel cold all the time, or get sick more often
• Your mood sinks or your motivation disappears
• Your CoachCat recovery score stays yellow or red for days, even on easy weeks
• You are preoccupied with food, or you feel guilty when you eat

CoachCat reads your sleep, heart rate variability, and recent training stress, then gives you one recovery number.

A simple 10 week plan

1. Week 0: Log your food for 3 days, with real portions. Most riders find the empty calories in the first day. Then set one number: a deficit of 300 to 500 calories per day.
2. Weeks 1 to 2: Fix food quality first. Add protein to every meal, add vegetables, and cut added sugar and alcohol. Hit every FuelTrix target.
3. Weeks 3 to 8: Run the deficit on easy and rest days. Keep hard days near maintenance. Lift twice a week.
4. Weeks 9 to 10: Weigh in, check your power numbers, and return to maintenance before intensity begins.

A 10 week block at the pace above takes roughly 5 to 10 lb off a rider who has it to lose. Keep a check on your power, your recovery, and how you feel. The goal is more watts per kilogram, not fewer kilograms.

Keep reading

• FuelTrix: how many carbs per hour to eat, on every workout
• Winning in the kitchen
• Using your power meter for weight loss
• Pre-ride nutrition, during-ride nutrition, and post-ride nutrition

References

1. Garthe I, Raastad T, Refsnes PE, Koivisto A, Sundgot-Borgen J. Effect of two different weight-loss rates on body composition and strength and power-related performance in elite athletes. International Journal of Sport Nutrition and Exercise Metabolism. 2011;21(2):97-104. doi:10.1123/ijsnem.21.2.97
2. Morton RW, Murphy KT, McKellar SR, et al. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. British Journal of Sports Medicine. 2018;52(6):376-384. doi:10.1136/bjsports-2017-097608
3. Thomas DT, Erdman KA, Burke LM. American College of Sports Medicine joint position statement: nutrition and athletic performance. Medicine & Science in Sports & Exercise. 2016;48(3):543-568. doi:10.1249/MSS.0000000000000852
4. Impey SG, Hearris MA, Hammond KM, et al. Fuel for the work required: a theoretical framework for carbohydrate periodization and the glycogen threshold hypothesis. Sports Medicine. 2018;48(5):1031-1048. doi:10.1007/s40279-018-0867-7
5. Mountjoy M, Ackerman KE, Bailey DM, et al. 2023 International Olympic Committee's (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs). British Journal of Sports Medicine. 2023;57(17):1073-1097. doi:10.1136/bjsports-2023-106994