
Arrasate-Udalatx Mendi Lasterketa 2027
Mandatory gear
The Arrasate-Udalatx Mendi Lasterketa organisation requires you to carry this gear during the race. Non-compliance may result in time penalties or disqualification. Always check the official rules before the race, as the list may change between editions.
The emergency kit for Arrasate-Udalatx Mendi Lasterketa: 3 pieces and done
These 3 pieces cover the race safety gear. Together they cost €42.76 and take a minute to buy; the rest of the list is explained below.
Prices may vary. Check the store for the current price.
Mandatory gear — Arrasate-Udalatx Mendi Lasterketa
| Item | Notes | Qty | Distances |
|---|---|---|---|
✓ windproof | Windproof jacket | 1 | All distances |
✓ Emergency blanket Lifesystems Thermal Blanket View on Amazon →(opens in a new tab) | Thermal survival blanket of at least 1.20 x 2.10 m | 1 | All distances |
✓ Reusable cup Salomon Soft Flask 250 ml View on Amazon →(opens in a new tab) | Reusable cup or soft flask | 1 | All distances |
Which vest do you need for Arrasate-Udalatx Mendi Lasterketa?
With 22 km on the longest distance and this mandatory gear list, you need a 5 L vest. These are our picks:
💡Tip: check your gear several days before the race. Never use anything new on race day.
Recommended products to meet mandatory gear requirements

Lifesystems
MandatoryLifesystems Thermal Blanket
Reflective emergency thermal blanket. Retains 90% of body heat. Ultralight (60 g) and compact, it fits in any trail pack.
View on Amazon(opens in a new tab)
Salomon
MandatorySalomon Soft Flask 250 ml
Collapsible 250 ml soft flask with a high-flow valve and a wide 42 mm mouth for fast refills at aid stations. It shrinks as you drink, fits the front pocket of any vest and weighs just a few grams empty.
Strengths
- +High-flow valve: quick sips without hard biting
- +42 mm mouth, easy to refill and to drop in ice or tablets
- +Folds down to almost nothing when empty
Watch out for
- −Pricier than generic Amazon flasks
- −The valve can drip slightly if not fully closed

La Sportiva
La Sportiva Bushido III
The quintessential skyrunning shoe, built in Italy for the most demanding terrain. FriXion White outsole with Impact Brake System delivering extraordinary grip on dry and wet rock. Low profile and maximum sensitivity for precise footing on every step. Weight: 285 g. Drop: 6 mm.
Strengths
- +FriXion White outsole with Impact Brake System: exceptional grip on rock
- +Low, sensitive profile: maximum precision on technical terrain
- +Robust, durable Italian construction
- +Lightweight (285 g) for skyrunning and technical mountain
Watch out for
- −Low cushioning: uncomfortable over very long distances
- −Narrow fit, not suited for wide feet
- −Not suitable for beginners or rolling terrain

Salomon
Salomon Speedcross 6
Salomon's most versatile trail shoe, ideal for technical terrain and mud. Exceptional grip with Contagrip sole and EnergyCell+ cushioning.
Strengths
- +Exceptional grip in mud and technical terrain
- +Reinforced toe protection
- +Comfortable and quick Quicklace system
- +Efficient water drainage
Watch out for
- −Average durability on pavement
- −Somewhat narrow fit for wide feet
Inov8
Inov8 TrailTalon
Inov8 trail shoe with Tri-C Sticky outsole and moderate lugs for long runs on varied terrain.
View on Amazon(opens in a new tab)
Salomon
Salomon ADV Skin 12
12-litre hydration vest with SensiFit system. Two 500 ml front soft flasks included. Easy-access pockets and a close, bounce-free fit.
View on Amazon(opens in a new tab)
Leki
Leki Ultratrail FX.One
Foldable trail running poles in 3 sections (110-130 cm). Ultralight carbon (175 g per pole), compact 38 cm folded. Speed Lock 2 locking system.
View on Amazon(opens in a new tab)
Petzl
Petzl Actik Core
Rechargeable 600-lumen headlamp with the Core battery included. Compatible with AAA batteries. Red mode to preserve night vision. Ideal for ultras with night sections.
View on Amazon(opens in a new tab)
Berghaus
Berghaus Paclite 2.0 GTX
Waterproof jacket with a Gore-Tex Paclite membrane (around 330 g). Fully waterproof with taped seams, fixed adjustable hood, storm flap behind the zip and cuff adjustment. Packs down small in a vest. Heavier than a pure running hardshell, but it meets the waterproof-breathable membrane requirement in race rules and is the affordable route into Gore-Tex.
Strengths
- +Gore-Tex Paclite membrane: full, durable waterproofing
- +Taped seams and adjustable hood: valid for mandatory kit
- +The cheapest way into real Gore-Tex
Watch out for
- −Around 330 g: three times the weight of a running-specific shell
- −Hiking cut, less trim for running
Buying guides to choose well
Want to know more? Read our complete guide to mandatory gear for ultra trail.
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