In this type of race, some equipment is required and something that is recommended equipment. The organizer considers it necessary to be able to carry out the race in a safe manner. 
During the races, participants are checked to ensure that they have what is required (mandatory equipment). In the event of deficiencies in this list, the participants will receive a time penalty or be disqualified from the race itself. 
Recommended equipment is more to be considered a guide for inexperienced participants and reflects comfort requirements.

Mandatory equipment

The selection and testing of sacks is of great importance for the execution of a race. If you run with full packing, the bag will have between six and ten kilos that shake up and down for each step in the race. In competitions, it should be easy to reach energy supplements and drinks from the bag's pockets without having to take the backpack off. 
A backpack should have space for food, clothing, sleeping bags and equipment for a week. Food weighs the most and takes the greatest place in the bag. As the days go by and the food is eaten, the sack should be able to compress the "void" so that the sack always sits tightly on its back. 
When I read the web pages of the organizer ahead of the course, there were different descriptions of requirements for content in the bags that were to be used for the day stages. To be sure, I therefore chose to bring a bag for full packing and a day bag. It was clear that the text was cut and pasted from different authors.

Backpack and vest

Selection of backpack fell on Ultimate Direction Fastpack 25 (25 liters). Ultimate Direction is known for good running vest and Fastback is a series of 15, 25, 35 and 45 liters. Fastback 25 sits very well on the body and has nice pockets. With extra stretch pockets, good storage capacity and bottle holders in the shoulder straps, this is a good choice. Fastback 25 is airy and easy to compress by rolling together the top and "cutting" it with the side straps.

West

From the day trip I chose a vest from Salomon - Advanced Skin 12 Set. Salomon is my favorite runner-up supplier. Advanced Skin 12 Set breathes well, sitting as molded to the body without being uncomfortable. The vest has elastic pockets that provide easy access with associated "custom" bottles.

Required equipment in the backpack

Road-book
This is a guidebook as the organizer provides. It usually shows the day steps with control point, terrain, altimeter and distance. In some cases, and in this course, GPS coordinates are included for the checkpoints in the book. 
Compass / GPS
We were required to have a GPS and extra battery for night navigation. At the forefront, I tested various GPS devices for use with navigation and predefined POI routes. Experience, habit and simplicity led me to make use of mine Garmin Fenix 5x Plus for navigation, but I also had a compulsory unit as a spare. The spare unit was a Garmin e-Trax 30 that was in the bag all over. Navigation with Fenix worked great!

married Pump
Hose, scorpion and other insects can bite - so when a poison pump is to be selected it is the best.

First-aid kit
Here I choose the smallest first aid kits with the elementary and I learn to know everything in the dark. The medical personnel in the races are doctors and nurses who often provide ambulance personnel - they have most. If possible I have a larger package in dropbag with tablets for poor stomach, paracet, ibux, bandage, patch etc ... 

whistle
On the West (Advanced Skin 12 Set) an approved one has already been installed whistle for use in an emergency, I also have one in the first aid kit. For your own safety, the flute should be secured so that it is always easily accessible to the mouth. 
Shadow hat with neck protection
I have a white, very thin and lightweight "cap" from Salomon with curtain. This I have used for desert races for several years and will soon be in disintegration. The only thing I wish it had was more airing. In this race I also used a sunscreen with sweatband on the forehead to limit sweat that flowed into the wound that I got over the right eye. 

Headlight
In a desert it gets very dark - very fast. Here I could just as easily use sandpaper as a map where there are tens of miles in all directions with sand dunes. Headlamps There are countless types but I prefer the simple ones; with replaceable battery and which also has red light. Red light is used in the tent to limit glare by others who want to sleep. A headlamp with replaceable battery lasts 2-3 times longer than rechargeable lamps and in the desert is limited with charging capabilities - changing batteries is easy and fast. 
Battery for headlamp
I chose to bring "only" one extra set of battery - I think weight, but with just one extra pair of battery, pressure is put on me to finish the day trips at a reasonable time. "I don't have battery to run so long after dark". 

Salt tables or equivalent
I brought along salt tablets with electrolytes and powder and gel. From experience, after a couple of days I will lose my desire for most of the energy drinks and powder. Then the salt tablets with electrolytes are the easiest. Some think it is okay to have gel containing salt with electrolytes 

Water
Some people use "drinking containers" with drinking hose in drink bagOne, I prefer bottles that are placed in the pockets at the front of the bag. With two bottles, I have better control over how much bag is left and they are easier to refill. It is also much easier to adjust the intake of salt / electrolytes when one can have clean water in one bottle. 
I prefer "softflask" that squeezes as they are emptied. When I consider bottles, I want a big opening to make it easier to refill with a bag, powder or large tablets. I also want a simple drink-spout rather than great closing solutions and stuff that can break. I chose to bring their Salomon «Soft Flask Speed 500 ml». A bottle type with a large opening for tablets, good threads on the cap which makes it easy to open and hard round bottom which makes the bottle slip easily into the pocket of the vest.
 
Industry
The minimum requirement of the organizers is 2,000 calories per day - for me this is distributed in the form of breakfast, gel, nut mix and dinner. Before the race, I distribute the day rations in small bags to facilitate tomorrow's nutrition in pockets on shoulder straps and hip belt. . On the 100 km stage I also had noodles for soup and a canned box with "mackerel in tomato". 

signal Mirror
Unbreakable mirrors are important. This I put in the first aid bag. Mirrors are used to send emergency signals and to see sores in the face etc. 

sunscreen
I always have oily sunscreen with a high sun factor - but never more than mandatory. I also use the cream to lubricate feet before I crawl into the sleeping bag at night. Then I have soft feet at the start of the next day trip. 

Aluminum survival sheet
In the West (Advanced Skin 12 Set) Follow it with an approved «Thermal Blanket». This survival cloth is underestimated in use and is often used only in emergencies such as dehydration and severe injuries. But since most of them carry it in the bag, it should have been used more often. I use the foil for longer breaks both in cold and hot coats, I have it inside the jacket and sleeping bag for extra warmth as well as roof against sun and rain.
There are two sides to a survival film. 
The shiny and reflective silvery side uses you against the body to reflect the heat back toward the body and protect from the cold.
The other side, which is often gold-colored, uses the body to reflect the heat from the sun away from the body and protect from heat. 

Lightweight windbreaker
In the desert it often blows when the sun rises and goes down. After a night in a warm sleeping bag or a long day in the sun, the wind cools against the body. It is then good to put on a garment that insulates and screens for the wind. To save time, I choose a jacket that is so large that I can take it on the outside of the vest.
For this race I took my favorite jacket which is one super light jacket from Salomon with collar closed with magnets. This jacket breathes well and dries very quickly. 

Mandatory equipment for Dropbag

Sleeping bag 
In the heat I prefer a sleeping bag with full zipper. Then I can use it as a duvet when it gets too hot to sleep in the bag. 

Evening and night clothes 
Thin sweater is good to wear at night. If the sleeping bag is too hot I lie with the upper body outside. Then it is easy to protect your body against mosquitoes, mosquitoes and other insects.
Windproof and light pants I had from Salomon. It is black, protects against wind and captures solar heat especially in the morning. 

Safety pin - 10 pcs
This is to attach the start number and bandage.

metal knife
For use in adjusting equipment, food etc. I always have a very small "pocket knife" in the first aid kit. 

Medical certificate Medical certificate is important for both runner and organizer. Blood type, weight, allergy etc. are elements that are important to map. 

ECG - current 30 days. 
ECG does not make much sense but is a requirement in some races.

• US $ 200 or equivalent 
Cash is always nice to have - US Dollar has very few exceptions in its value in use worldwide. In addition, this ensures the organizer whether someone should mess away their tracking device or other

Clothing

Upper body clothing

I try to avoid "tight-fitting" and compression t-shirt when they over time give me difficulty breathing.
I'm looking for clothing with the least possible nail. Moisture from sweat enters nails and eventually dries and leaves salt. Salt makes the seam stiff and as the days go by, the seam will cut into the skin. Several manufacturers glue the seam instead of sewing, and they make clothing where they avoid seams in areas where the sack is located.
Some like to have the opportunity to open their t-shirt in their neck to vent a little extra when it gets too hot. However, long races with sacks often lead to zipper etc. creating challenges with friction against the body and in the sack attachment system. With a lot of heat and desert I chose to take two thin t-shirt from Salomon. One that is durable that dries quickly and an airy that keeps me cool over time. In the competition I started with the t-shirt that is most durable, but after a couple of days of running and without washing, this became stiff in the fabric. The second t-shirt is made of a more cotton-like fabric and more on the moisture. The benefit of a moisture-retaining substance is a cooling effect that occurs in the heat when there is some wind and there is some air between the t-shirt and body.

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Bottoms

Of leggings I have run with tights, long and short shorts. What is most important in a shorts is the seam on the inner pants and the knit around the waist. Over long distances sweat and dry this area on the body several times. Seams are filled with sweat and solidify due to salt.
Tights I do not like to run with - so that option I have opted out for good. Long and wide shorts are very comfortable and protect it against sun. The only thing is that they have to "hang" in the lock when moving. I chose to bring a split shorts with "panty" from Nike
From Salomon I chose my favorite shorts that has a little stretch, is very light and underneath I prefer the panties from Falke.

Stockings

When I run for several days and wear all the equipment, my luxury is new socks every day. I prefer short merino wool stockings that keep the softness against the eventually bruised feet. Is it a race where I understand that my legs will swell up, I use larger shoes and two pairs of socks at the beginning to reduce friction. Two pairs of socks can also be used generally to reduce friction between feet and shoes - some combine thin nylon stockings with a pair of merino socks. I brought some pair of Merino wool socks from Inov8 and also Injini's stockings that are super good to wear - and that they reduce friction between toes

Shoe

The substrate varies greatly from desert to desert. Now I was going to a desert with "high dunes" consisting of lots of fine sand.
Although the plan was a little different, I ended up with two pairs of shoes from Hoka. Hoka Clayton 2 are a pair of shoes that I like very well and have used in several competitions. But since I had the opportunity to switch between day trips, I chose this as the size was a little big, and protection against the fine sand was limited. The rest of the race I used Hoka Challenger ATR that gives a little more response in the sole and is closer to the foot. In this race there would have been an advantage with gaiters against the sand. It is not always easy to accept the rodents sand against feet and between toes

Enhancements

When all of the compulsory equipment is in place there are own desires for comfort that fills the bag and weight is still important. For me, sleep is important so a good sleeping mat and earplugs that provide a good night's sleep and excess. In addition, I have easily available one pair of simple "sandals" if I have to go to the "desert toilet" at night and to use in the camp.
I also had one pair of sunglasses which scales from dark top to light at the bottom of the glass. This type of glass is an advantage when the sun is about to go down and the contours of the ground become blurred.
I also have one (BPA-free) Nalgene bottle as I fill with water and electrolytes that I drink off after the day trips. The same bottle I fill with hot water and bring in the sleeping bag when I lay down.