Up to 557 Calories
Compact, Low Volume
Easy to Eat & Digest

High Calorie Bars for Endurance, Expeditions and Appetite Loss | Phoenix Bars

Name: High Calorie Bars for Endurance, Expeditions and Appetite Loss | Phoenix Bars
Brand: Flaming Phoenix
Price: 59.88 GBP
Availability: InStock

Hit Your Calorie Targets Even When Eating Is Difficult - Up to 557 Calories per Bar.

Most customers choose 12-24 bars.

Flavor Starter Bundle - Founder Recommended - 12 Bars (2 of Each Flavour) Signature Bundle - Most Popular - 24 Bars (4 of Each Flavour) Short-Term Bundle - 6 Bars (1 of Each Flavour) Vanilla (Original) Cherry Bakewell Chocolate Salted Caramel Ginger Apple & Cinnamon

Product variants

Quantity

High-Calorie Bars | Phoenix Bars

Phoenix Bars are specialised high-calorie nutrition bars designed for extreme endurance activities, expeditions, and situations where maintaining adequate calorie intake is difficult. Each compact, lightweight bar delivers up to 557 calories, making Phoenix Bars a calorie-dense food option for athletes, adventurers, and individuals experiencing reduced appetite or unintended weight loss. Phoenix Bars are available to customers across Europe and Canada, including the Netherlands, France, Belgium, and Germany.

Up to 557 Calories Per Bar:

A calorie-dense energy bar, each Phoenix Bar delivers up to a substantial 557 calories per bar.

Highly Compact, Lightweight & Portable:

Minimal bulk, maximum energy. Designed to help you save weight and space whilst trekking, mountaineering and during ultra-endurance events - where every gram counts. For practical guidance across different situations, including endurance, expeditions, and periods of low appetite, see how to use Phoenix Bars.

Up to 66g of Carbohydrates:

Phoenix Bars are high in carbohydrates - delivering a strategic mix of fast- and slow-release carbs to power multi-day adventures, trail ultras, and high-altitude expeditions.

Can Be Made into Porridge or Smoothie:

Add water or milk (hot or cold) to turn your bar into a nutritious warm porridge or quick recovery smoothie.

Easily Digestible:

100% vegan, gluten-free, and GMO-free. Built for easy digestion in high-output scenarios and at altitude, with gut-friendly ingredients that minimise risk of digestive issues - essential for ultra runners and expedition enthusiasts alike.

Easy-To-Eat & Open:

Soft texture that melts in your mouth - easy to eat even with gloves or in sub-zero conditions. Phoenix Bars are often used when low appetite or difficulty eating makes consuming enough calories challenging.

Tasty Without Being Sickly Sweet:

Six delicious, neutral flavour options - preventing flavour and palate fatigue. Ideal for ultras, offshore sailing, multi-day adventures, or continuous efforts when over-sweetened snacks become unappealing.

Natural Ingredients:

Made from real, whole ingredients like gluten-free oats, coconut oil, pea and soy protein, and plant-based nutrients.

Climate-Resilient:

Won’t freeze in sub-zero temperatures or melt in extreme heat. Built for polar regions, ski touring, ski mountaineering, desert crossings, and jungle heat — a climate-proof energy bar for every type of extreme environment.

Up to 19g of Protein:

Supports muscle maintenance and recovery during and after high-output efforts. Essential for ultra-endurance races, military personnel and multi-day expeditions.

Chopped into Chunks:

Each bar can be chopped into bite-sized pieces for convenient snacking. Perfect for trail ultras, climbing and fastpacking.

8 Vitamins & Minerals:

Packed with 8 essential, naturally occurring vitamins and minerals — including iron, manganese, phosphorus, and B vitamins — plus MCTs from coconut oil for steady, sustained energy.

Altitude Optimised:

Formulated with nutrients that support performance at high-altitude climbing and mountaineering, including iron, vitamin E, B1, and B7 — helping oxygen delivery and energy regulation in thin air.

Sustainable:

Vegan, palm oil-free, and ethically produced with biodegradable packaging and eco-conscious shipping options — perfect for the sustainably-minded adventurer or eco-conscious ultra runners.

Gluten-Free & Vegan:

Ideal for coeliacs, plant-based athletes, and mixed dietary groups — no compromises on performance or inclusivity.

Robust:

Built tough for real-world use. Comes in water-resistant packaging that won’t crush or tear. Made for ultras, mountains, the arctic and everything in between.

Ready to Eat:

No prep, no waiting. Just open and fuel. Perfect for race-day nutrition, emergency scenarios, or when you simply need calories fast.

Long Shelf Life:

Up to 2-year best-before date — great for expedition planning, ultra race drops, or emergency kits.

Made in the UK:

Hand-crafted by an experienced manufacturer to meet the highest standards in quality, food safety, and performance nutrition — trusted by ultra athletes, mountaineers, and expedition enthusiasts worldwide.

Phoenix Bars Subscription Benefits:

Simplify your routine with automatic, reliable Phoenix Bar deliveries
Have direct input on new flavours
Receive exclusive samples of new flavours
Enjoy special gifts
Get priority shipping on every order
Receive complimentary invitations to events

Nutritional Information

Typical Values (Cherry Bakewell Flavour)

Per 100g / Per Bar (120g)

Energy: 464kcal / 557kcal

Fat: 22.1g / 26.5g

of which saturates: 10.0g / 12.0g

Carbohydrate: 50.1g / 60.1g

of which sugars: 16.2g / 18.2g

Fibre: 3.6g / 4.4g

Protein: 15.2g / 18.2g

Salt: 0.14g / 0.17g

Vitamins & Minerals (%RI*)

(per 100g / per 120g)

Vitamin E (α-tocopherol equiv.): 4.3mg (36%) / 5.2mg (43%)

Vitamin B1 (Thiamine): 0.3mg (27%) / 0.4mg (33%)

Vitamin B7 (Biotin): 8.3µg (17%) / 9.9µg (20%)

Phosphorus: 253mg (36%) / 303mg (43%)

Iron: 2.7mg (19%) / 3.2mg (23%)

Zinc: 1.6mg (16%) / 1.9mg (19%)

Copper: 0.3mg (30%) / 0.4mg (36%)

Manganese: 1.7mg (85%) / 2.0mg (102%)

Our Natural Ingredients

Vanilla: Gluten Free Oats (32%), Glucose Syrup (Sulphites), Sugar, Coconut Oil, Soya Protein Isolate (7%), Pea Protein Crisp (6%) [Pea Protein, Rice Flour], Rapeseed Oil, Gluten Free Oat Flour, Emulsifier: Glycerol; Caramelised Sugar Syrup, Natural Vanilla Flavouring (1.3%), Antioxidant: Tocopherol-Rich Extract.

Cherry Bakewell: Gluten Free Rolled Oats, Glucose Syrup, Sugar, Coconut Oil, SOY Protein Isolate, Pea Protein Crisps [Pea protein, Rice flour], Rapeseed Oil, ALMONDS, Glycerine, Plain Caramel [Glucose syrup, Water, Sugar], Cherry Flavouring (1%), Natural Flavouring (0.5%), Antioxidant: Tocopherols

Ginger: Gluten Free Rolled Oats, Glucose Syrup, Gluten Free Oat Flour, Sugar, Coconut Oil, SOY Protein Isolate, Pea Protein Crisps [Pea protein, Rice flour], Rapeseed Oil, Glycerine, Plain Caramel [Glucose syrup, Water, Sugar], Natural Vanilla Flavouring (1%), Ground Ginger (1%), Antioxidant: Tocopherols

Salted Caramel: Gluten Free Rolled Oats, Glucose Syrup, Sugar, Coconut Oil, SOY Protein Isolate, Pea Protein Crisps [Pea protein, Rice flour], Rapeseed Oil, Gluten Free Oat Flour, Glycerine, Plain Caramel [Glucose syrup, Water, Sugar], Natural Flavouring (0.5%), Sea Salt [0.4%), Antioxidant: Tocopherols

Chocolate: Gluten Free Rolled Oats, Glucose Syrup, Sugar, Coconut Oil, SOY Protein Isolate, Pea Protein Crisps [Pea protein, Rice flour], Rapeseed Oil, Gluten Free Oat Flour, Dark Chocolate Drops (5%) [cocoa mass, sugar, cocoa butter, fat-reduced cocoa powder, emulsifier: SOYA lecithin], Glycerine, Cocoa Powder (3.7%) [Acidity regulator: Potassium Carbonate], Natural Vanilla Flavouring, thickener: xanthan gum; acidity regulator: citric acid; preservative: potassium sorbate], Antioxidant: Tocopherols

Apple & Cinnamon: Gluten Free Rolled Oats, Glucose Syrup, Sugar, Coconut Oil, SOY Protein Isolate, Pea Protein Crisps [Pea protein, Rice flour], Rapeseed Oil, GF Oat Flour, Glycerine, Dried Apple Pieces (4%) [Naturally occurring SULPHITES present], Plain Caramel [Glucose syrup, Water, Sugar], Cinnamon (0.6%), Antioxidant: Tocopherols

Allergy Advice: for allergens, see ingredients in bold. May contain nuts, eggs, sesame, peanuts and milk.

Frequently Asked Questions

What makes Phoenix Bars a high-calorie nutrition bar?

Phoenix Bars are formulated to deliver up to 557 calories in a single, compact bar, making them a highly calorie-dense food option designed for situations where maximising calorie intake efficiently is important.

How many calories, carbohydrates, and protein are in a Phoenix Bar?

Each Phoenix Bar contains up to 557 calories, up to 66g of carbohydrates, and up to 19g of protein, providing a balanced macronutrient profile to support sustained energy intake.

How large is a Phoenix Bar and how easy is it to eat?

Phoenix Bars are compact and soft in texture, allowing them to be eaten gradually, broken into smaller pieces, or consumed over time, which can be helpful when appetite is limited or eating conditions are challenging.

Are Phoenix Bars suitable for long or repeated use?

Phoenix Bars are designed for repeated use during long days, multi-day activities, or periods where maintaining calorie intake is important, and they have a long shelf life suitable for storage and planning.

Can Phoenix Bars be used alongside regular meals?

Yes. Phoenix Bars are commonly used alongside regular meals as an additional calorie-dense food option when extra energy intake is required or when full meals are difficult to manage. You can also read our guide on high-calorie food when eating is difficult for a broader explanation of calorie-dense nutrition.

Phoenix Bars: A Game Changer

I took Phoenix Bars with me on Mt Teide and during my Aconcagua expedition. On Mt Teide, I was feeling quite tired and my legs were heavy about 400 metres before the summit. I had around a quarter of a Phoenix Bar and it was game-changing for me. I felt charged again and was able to reach the summit. I found a small amount of the bar made a big difference. The bar tasted really nice and was easy to eat on the trail. On Aconcagua, I went up to 4,385 metres but made a huge mistake of sending my Phoenix Bars ahead to base camp, so I didn’t have access to them for several days. In future climbs, I’ll be keeping them with me in my day hiking pack.

Used in -45 degrees in the South Pole

Flaming Phoenix Bars featured as a star in my food supply for my recent South Pole expedition! Easy to eat, even at -45c. Apple and cinnamon was a particular standout.

Tested these bars in the Brecon Beacons

I got the short term bundle because I wanted to try something new on the hills. What ended up a very wet and windy (-11C windchill) wander, I may have been wet but I wasn't hungry, or tired. Managed to go through 2 (or 3) bars on the hills including 1 before we set off, and 1 after we finished. I didn't find them dry, although I did drink 3.5l of water on the day. These definitely seem to do the job and are a good balance of size, calorie and flavour. Salted caramel was my favourite and I think it had actual salt flakes in.

Simply fantastic - couldn’t recommend more

During my eating disorder, these bars were one of the few food sources I found palatable, tasty and fulfilling and most importantly nutrient dense enough to get me through the day. I can’t recommend enough for people in similar situations who struggle to enjoy normal food whilst also wanting to feel healthy and strong.

Apple & Cinnamon

A great food choice for demanding ultra races

I successfully used Phoenix Bars as part of my fuelling strategy for the Winter Spine Challenger South. Reliable, easily eaten and most crucially for me, tasty and palatable especially towards the end of the race where yo finds it hard to eat. I ate the bars slowly by breaking them down into chunks and consumed a couple every 30 minutes.

Crucially for this race where the temperature was around or below freezing, the bars remained soft enough to eat unlike some other food that I had that was too hard to eat!

I would definitely recommend Phoenix Bars as part of a fuelling strategy for any ultra and will be using them myself again in future on my next race.