Fuel Built for
The Desert.
Over 100 customers have used Phoenix Bars while racing Marathon des Sables. Ultra high calorie density, heat stable, easy to eat mid stage.
Every gram in your pack has to earn its place.
In a multi-stage desert ultra you carry everything. Six stages, 250km, temperatures up to 50°C. Your food is competing with your sleeping bag, medical kit, and race gear for every gram of pack weight.
Phoenix Bars deliver up to 464 calories per 100g depending on flavour, in a format that will not melt in extreme desert heat.
2 to 3 bars per day across six stages equals 12 to 18 race bars. Add training bars and you should carry 18 to 24 bars minimum for complete preparation.
Choose your Desert Pack.
All bundles include a mix of all 6 flavours. Order early to guarantee international delivery times.
Most athletes underestimate how many calories they will actually eat.
- 6,684 total calories
- 2 of each flavour
- Good for race testing in training
- Approximately 2 bars per day for a six-day multi-stage race
- Suitable for shorter multi-day events
- 10,026 total calories
- 3 of each flavour
- 6 training plus 12 race bars
- Approximately 3 bars per day fuelling strategy
- Covers training and the race itself
- 13,368 total calories
- 4 of each flavour
- Training plus carb load plus full race supply
- Gut tested before race day
- Recommended for full preparation
All orders ship from the UK. International delivery available. Please order early to allow for international shipping times.
How customers racing multi-stage desert events use Phoenix Bars.
Carb Loading
1 to 2 bars per day in the 48 to 72 hours before Stage 1 to top up glycogen stores.
Stage Fuelling
Nibble on a bar as you go and put it back in your pocket, or pre cut into quarters and eat them throughout the stage.
Morning Porridge
Crumble into a lightweight bowl, add water, and you have a warm, calorie dense breakfast.
End of Stage
One full bar after each stage. Up to 557 calories per bar and 18g protein to support recovery from heat and accumulated mileage.
What customers said after
crossing the finish line.
I ate Phoenix Bars every day for lunch, and they were excellent. The taste was great, quite plain in a good way, which meant I did not experience any flavour or palate fatigue, especially compared to other products I was eating at the time. They worked really well for me, and Phoenix Bars will definitely be a staple in my ultra endurance activities moving forward.
Phoenix Bars helped me finish the Marathon Des Sables and claim the record as one of the oldest ever finishers of the race.
After reading positive reviews during my prep for MDS Legendary, I reached out to James. I ended up eating them for every breakfast, lunch and even as additional snack on the 100k long stage after 80k to manage the last 20k. Easy to digest on the go, by taking a bite plus sip of water having security of getting more than 525kcal into your tired body. Saved my race and managed to finish 135 (#9 in my age group).
Phoenix Bars worked very well for me on the Marathon des Sables this year and I was very pleased I took them.
I used Phoenix Bars on the 2025 Marathon des Sables and these flapjacks were a godsend. High calories to grams, tasty and easy to consume. I used them for my breakfast every day. I will recommend them to anyone doing the MDS in the future.
I used Phoenix Bars during the 6 stages of the Legendary MdS in April 2026. I found them easy to digest in small bites whilst on the move in the heat. Loved the chocolate flavour. I needed to keep them in a separate plastic bag due to their crumbly nature. I didn't want to lose any precious kcals to the desert.
I used Phoenix Bars during the Marathon Des Sables as my breakfast every day. Their calorie to weight ratio is superb. Highlight was turning a bar into porridge on the rest day. Would not hesitate to recommend Phoenix Bars.
I have been an advocate of Phoenix Bars since their inception. This year I was fortunate enough to go to Morocco to take part and complete The Marathon Des Sables. [...] On the long day I ate 3 bars throughout the day mixed with 30g jellies, this made a fully fuel efficient day. Easy to carry, kept their shape even in desert temperatures. Break a little off, put in the mouth and gently chew, have a swallow of water and it's a massive dose of calories to sustain through the day. Easy to digest, easy to swallow, highly recommended.
Speaking at endurance
running expos.
James Frost has spoken about endurance and multi-stage desert race fuelling at runners' expos, including a 2025 expo for athletes preparing for Marathon des Sables. The talks cover practical fuelling strategy, calorie maths, and how athletes use Phoenix Bars in extreme heat.
Over 100 customers have used Phoenix Bars while racing Marathon des Sables, in real race conditions.
If you want personal guidance on your race nutrition strategy, get in touch directly.
Multi-Stage Desert Race Nutrition Podcast Episode
James Frost, founder of Flaming Phoenix, was invited by an upcoming Marathon des Sables competitor to discuss practical race fuelling strategy and how athletes are using Phoenix Bars during the race.
The conversation covers the realities of eating in extreme heat, managing calorie intake when appetite disappears, and why customers choose Phoenix Bars as part of their desert nutrition strategy.
The Complete Phoenix Bars Multi-Stage Desert Race Performance Plan
Everything you need to know about fuelling a multi-stage desert race with Phoenix Bars, from training protocol to race strategy. Includes specific guidance for athletes racing Marathon des Sables.
- How to test your gut before race day
- Stage by stage usage strategy
- Preparation plans
- Porridge prep instructions for camp mornings
- Pack weight and calorie maths explained
