
Marathon des Sables: What Actually Matters
The Marathon des Sables has a way of becoming far more complicated than it needs to be. Spend five minutes online and you’ll find spreadsheets, gear breakdowns to the gram, and endless debates about socks.
Here’s the truth. It’s a multi-day race in the desert where you carry your own kit, manage your energy, and keep moving forward. That’s it.
Yes, details matter. But simplicity wins.
The 2026 Marathon des Sables – The Legendary is not just another year in the desert. It marks 40 years of the race. That alone tells you something about what’s coming. This edition matters. It will be longer, tougher, and built to celebrate the history of the event properly.
As we move through March, I will release weekly articles to help you sharpen your preparation. This is the second of four. The aim here is simple: give you clarity. No surprises. No guesswork.
Below is a broader, more grounded take on what to focus on, including some of the small, often overlooked realities that make a big difference once you’re out there.
Start With This Mindset
You are not preparing for comfort. You are preparing for control.
Control of your energy.

Control of your hydration.
Control of your thoughts when things get hard.
The desert strips away noise. What’s left is you, your pack, and the next checkpoint.
1. Your Pack: Fit Over Fashion
You’ll see a lot of the same packs on the start line. The WAA 20L Ultra Bag is extremely common because it was built specifically for races like this.
But popular doesn’t mean perfect.
A pack should sit close to your body without bouncing. It shouldn’t pull on your shoulders or rub your lower back raw by day three. Try it loaded. Walk in it. Run dunes in it if you can.

Smaller is usually better. If you give yourself space, you’ll fill it. And once your food weight drops midweek, too much space means constant shifting and irritation.
Getting close to the 6.5 kg minimum isn’t about ego. It’s about reducing cumulative fatigue. Every unnecessary gram is lifted thousands of times over the week.
2. Sleep Is Recovery, Not Luxury
You don’t need a five-star sleep system. But you do need rest.
A sleeping bag choice should reflect how you actually sleep at home. If you’re always cold, don’t suddenly become brave in the Sahara. Cold nights drain energy quickly.
A lightweight down jacket is incredibly useful. Brands like Mont Bell, Haglöfs, Yeti, and Nordisk all make reliable options. It doubles as camp insulation and extra warmth inside your bag.

Random but important: cover your head at night. Even a simple buff makes a difference.
And yes, take a sleeping mat. After several hours in the heat, lying on hard ground feels far less heroic than it sounds.
3. Clothing: Function Only
Nobody cares what you look like by stage four.
Choose clothing you’ve already trained in. Check underarms, inner thighs, lower back, and anywhere straps sit. If something rubs slightly at home, it will tear skin in the desert.

A spare pair of socks is wise. Changing into dry socks after a long stage feels surprisingly restorative.
Some runners like having a lightweight long sleeve or leggings just for evenings. It’s less about warmth and more about feeling human again after a tough day.
4. Shoes and Gaiters: Non-Negotiable
Shoes must be tested, broken in, and reliable.
Slightly wider can help accommodate swelling. But oversized shoes create movement. Movement creates friction. Friction creates blisters.

Aim for a thumbnail’s space beyond your longest toe.
Gaiters are essential. Sand will find its way in otherwise, and constant grit inside your shoe is demoralising.
Small thought: practise emptying sand quickly and calmly. You’ll do it often.
5. Food: Think Beyond Calories
Yes, you must carry at least 2,000 calories per day.
But calories alone aren’t the whole story. Appetite changes. Sweet fatigue is real. By midweek, many runners crave savoury food.
Bring variety. Something crunchy. Something salty. Something soft. Texture matters when you’re exhausted.

Recovery nutrition right after each stage can speed up how you feel the next morning. Even a small protein-based drink helps.
Also consider practicality. If you skip a stove, make sure your meals work with cold water. And if you’re someone who needs coffee to function, plan for it. Tiny comforts can have a big psychological impact.
6. Water Strategy: Be Flexible
You must be able to carry at least 1.5 litres, usually via two 750 ml front bottles.
Soft flasks and bladders are lighter, but they can puncture. Rigid bottles are heavier but durable.

Have the capacity to carry an additional 1.5 litres if required. In extreme heat or on longer stages, the race has sometimes increased water allowances.
Practice drinking steadily rather than chugging. Drink to thirst before the race starts. Overhydrating early doesn’t help.
7. Salt and Electrolytes: Plan It Yourself
Salt tablets are no longer handed out.
You must start with 14 stock cubes as part of the requirements, but that’s just one element. Test your electrolyte strategy in training. Don’t experiment for the first time in Morocco.
Cramps in the middle of a long stage are not where you want surprises.
8. Your Feet: Your Entire World
If your feet fail, your race fails.
Trim nails carefully before the event. Know which socks work for you. Consider taping strategies only if you’ve tested them.

After each stage:
- Remove shoes immediately.
- Clean sand off.
- Let skin dry.
- Deal with hot spots early.
Blister management is part of the race. The medical team is experienced, but prevention is always easier than repair.
9. Heat Preparation
The final two weeks are ideal for heat acclimation.
Sauna sessions. Hot baths. Controlled heat chamber work. Even Bikram yoga.

The goal isn’t to exhaust yourself. It’s to teach your body to manage elevated core temperature more efficiently.
Arriving heat-adapted reduces stress from day one.
10. Taper Properly
In the final weeks, you don’t gain fitness. You protect it.
Reduce volume gradually. Stay mobile. Stay healthy. Combine tapering with heat work.
You want to feel slightly restless at the start line, not tired.
11. Learn to Walk Well
This surprises many first-timers.
You may not run as much as you think. Dunes, heat, pack weight, and long stages change expectations quickly.

Practice strong, efficient walking. Especially uphill. Keep posture tall. Use arms deliberately.
Fast walking wins time and saves energy.
12. Poles: Train With Them or Leave Them
Poles can feel like four-wheel drive in soft sand and on climbs.
Lightweight folding carbon poles from brands like Black Diamond and Leki are common.
But poles only help if you’ve trained with them. Poor technique wastes energy. Good technique saves it.
13. Keep Equipment Minimal
Every “just in case” item adds up.
Ask: will this meaningfully improve my race?
Your pack should sit close to 6.5 kg. The only luxury many runners truly appreciate is a lightweight way to listen to music.
Interestingly, many also discover they don’t miss their phone at all.
14. Tent Life
You’ll share a tent with seven others.
These people become your support system. You’ll hear their breathing at night. You’ll see their low moments and your own reflected back.

Choose tent mates wisely if you can. The camaraderie becomes one of the most powerful parts of the week.
15. Travel and Admin Realities
Wear your running shoes and kit on the plane. Carry your pack as ‘carry-on’ with as much of your race kit as possibe. Lost luggage does happen.
Bring your own snacks for travel days. The transfer from Marrakech is quite long, so is the transfer to bivouac one. MDS do provide lunch packs as and when applicable, always good to be self sufficient.
The first two nights in bivouac are self-sufficient, plan accordingly for food. Take comfort items you’re happy to give away before racing begins, for example, you may take a larger/ heavier inflatable bed.

Admin day can take 1-2 hours. Bring water, snacks, sun protection, even an umbrella for shade. Stay patient.
Have additional items such as a base layer, sleeping bag liner and other items that may be on a ‘question’ list for the race. On night 1 and before you go to admin, you can make final decisions of what to and what not to take. Particularly important if you think you may be cold at night.
After bag check-in, you drop your luggage and no longer have access to extra gear. Make sure you have everything you need for the race! But full self-sufficiency only begins when the race starts, so you can enjoy small comforts until then.
Bring a simple repair kit. Zips break. Gaiters tear. The desert is unforgiving.
16. The Mental Game
At some point, you will question why you signed up.
That moment passes.

The Marathon des Sables isn’t just about endurance. It’s about staying calm when you’re tired. Staying steady when others surge. Accepting discomfort without drama.
Highs and lows are part of the rhythm. If it were easy, it wouldn’t matter.
Final Thought
The desert simplifies everything.
There’s no clutter. No constant notifications. No daily noise. Just sun, sand, wind, and the quiet focus of moving forward.
Whether you finish near the front or close to the cutoff, the experience is transformative.
It reminds you how little you actually need, and how much you’re capable of carrying.
MDS is a hark back to a more primitive time, a time without clutter and modern technology. Embrace this. Embrace the silence of the surroundings and the simplicity of placing one foot in front of the other.

MDS WEBSITE HERE
MDS Tour and MDS Clubs for 2026
Join the MDS Clubs on HEYLO HERE.
The MDS Tour starts in January and moves from location to location, Register HERE
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