Lakuntza
Lakuntza-Aralar Mendi Lasterketa
Sunday, 30 May 2027estimated date
Lakuntza-Aralar Mendi Lasterketa 2027: estimated date 30 May 2027
The organiser has not published the official 2027 schedule yet. The estimated date is based on last year's edition; we'll confirm it as soon as it's announced. Start sorting your gear and logistics.
Race data
| Modality | Distance | Elevation Gain | Max Time | Price |
|---|---|---|---|---|
| Lakuntza-Aralar 26K | 26 km | D+ 1200m | 4h | 15 EUR |
| Lakuntza-Aralar 13K | 13 km | D+ 650m | 2h30 | 10 EUR |
Lakuntza-Aralar Mendi Lasterketa requires mandatory gear: get it sorted early
Buying guides with the best value for money, picked for this kind of terrain.
What you need
Salomon
Salomon Speedcross 6
Salomon
Salomon ADV Skin 12
Maurten
Maurten Gel 100
How long will it take you?
Estimate your race time based on distance, elevation and your runner level.
Historical weather
Typical weather for the race date (10-year average)
Temperature
13°C – 22°C
Average 17°C
Rain
53%
3.3 mm avg
Wind
11 km/h
max. average
Sunshine hours
11h
daily average
Gear recommendations
Bring a waterproof jacket (53% chance of rain)
Asics
Asics Gel-Trabuco 14 GTX
A best-selling beginner trail shoe: GEL cushioning, good stability and a waterproof GORE-TEX membrane. Versatile and reliable for training on mixed terrain in any weather.
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.
Gore Wear
Gore Wear C5 GORE-TEX Glove
Glove with a fully waterproof, windproof GORE-TEX membrane and light insulation. The pick for running in snow, sleet or heavy rain while keeping your hand dry.
Gore Wear
Gore Wear M GORE-TEX Thermo Glove
Warmer variant of the Gore Wear C5 GORE-TEX: the same fully waterproof, windproof membrane, with extra thermal lining for intense cold on top of snow or rain. The pick when the problem isn't just water, but water AND hard cold at once.
Gore Wear
Gore Wear R7 GTX Shakedry
Chubasquero Gore-Tex Shakedry ultraligero (110 g). Impermeabilidad total sin membrana interior, altamente transpirable. El referente para corredores de montaña.
Nike
Nike Pegasus Trail 5 GORE-TEX
The best-selling gateway trail shoe: comfortable, cushioned and versatile for moving from road to trail. Waterproof GORE-TEX version, perfect for beginners and easy runs on mixed terrain.
Salomon
Salomon Bonatti Pro Waterproof Glove
Lightweight waterproof glove built for running, not just standing still in the snow: a waterproof membrane with more dexterity and less bulk than a thick membrane glove, for sustained rain without giving up handling gels or poles.
Salomon
Salomon Bonatti WP
Chaqueta cortavientos impermeable ultraligera (135 g). Costuras selladas, capucha ajustable y ventilación trasera. Se pliega en su propio bolsillo.
Sealskinz
Sealskinz Waterproof Lightweight Glove
Lightweight waterproof glove from a brand that specializes in outdoor sport waterproofing. A solid middle ground between a thin windproof glove and a thick membrane glove: genuinely waterproof without the bulk or price of the Gore C5.
TRIWONDER
TRIWONDER Polainas Impermeables Trail
Waterproof, breathable low gaiters for trail running, hiking and mountain use. Under-shoe strap and adjustable elastic band. A budget-friendly alternative to premium technical brand gaiters.
Sun protection essential (11h sunshine, up to 22°C)
Forecast for 30 May
Real-time data from Open-Meteo
Lakuntza-Aralar Mendi Lasterketa
The Lakuntza-Aralar Mendi Lasterketa is a mountain race that traverses the Aralar Natural Park starting from Lakuntza, a small village in the Barranca valley of Navarra. Now in its 21st edition (2026), the race has been running for over two decades, organized by the Zabalarte Mendi Taldea collective, dedicated to exploring, enjoying, and protecting the mountains.
The Courses
The Lakuntza-Aralar 26K (1,200m D+) is the long distance. A circular course from the main square in Lakuntza that climbs through beech forests to the summits of Aralar, passing through:
- Guardetxe — Shepherd’s refuge at the base of the summits
- Txorrotxeta — Summit with panoramic views over the Barranca valley and the Alavese Plain
- Irumugarrieta (~1,400m) — Highest point of the course, on the Navarra-Gipuzkoa border
The Lakuntza-Aralar 13K (650m D+) is the short distance. A more accessible course that shares the first kilometers with the 26K and offers a compact version of the Aralar experience.
There is also a non-competitive 13K mountain walk that covers the same route as the 13K in reverse. Open to all ages, it starts at 8:30 AM with a maximum of 50 participants.
Terrain and Difficulty
The course crosses the Aralar Natural Park: beech forests, highland meadows, shepherd trails, and summit ridges. Altitude ranges from 456 meters in Lakuntza to approximately 1,400 meters at the peaks. Moderately technical terrain with sections that can be wet or muddy, especially in the forests.
The 26K with 1,200m of elevation gain is a demanding race requiring previous mountain experience. The 13K is more accessible but not a beginner race: 650 meters of climbing in 13 km means sustained steep sections.
Mandatory Gear
The organization requires:
- Liquid container of at least 500 ml
- Thermal blanket
- Long-sleeved hooded windbreaker
Weather in Aralar can change rapidly, even in May. These safety measures are essential.
How to Get There
Lakuntza is in the Barranca valley of Navarra, 40 km from Pamplona via the A-10 motorway (towards Alsasua). From San Sebastián it’s 75 km via the AP-1. A small, quiet village with the start and finish in the main square. If it’s your first mountain race in Navarra, check out our trail running gear guide and add Lakuntza-Aralar to your planner.
Mandatory Gear
According to the official race regulations
360Complete Pack
Inscripción Lakuntza-Aralar 2026
RegistrationXXI edición de la Lakuntza-Aralar Mendi Lasterketa. Inscripciones a través de RockTheSport.
Browse all registrationTips
- •Inscripción online en RockTheSport
- •Plazas limitadas: 200 en la 26K y 170 en la 13K
- •Mayores de 18 años, federados o no federados
- •Los no federados incluyen seguro de accidentes y responsabilidad civil
Dónde dormir para la Lakuntza-Aralar
AccommodationLakuntza está en la comarca de la Barranca, con opciones de alojamiento rural y en pueblos cercanos como Alsasua e Irurtzun.
Browse all accommodationTips
- •Alsasua a 8 km con hoteles y pensiones
- •Irurtzun a 15 km, nudo de comunicaciones con más opciones
- •Casas rurales en la Barranca navarra: entorno tranquilo y precios moderados
- •Pamplona a 40 km si prefieres más oferta hotelera
Material para la Lakuntza-Aralar
GearCarrera de montaña por el Parque Natural de Aralar. Terreno variado con bosques, prados y senderos de cumbre. Altitud máxima ~1.400 m.
Salomon
Salomon Speedcross 6
Salomon's most versatile trail shoe, ideal for technical terrain and mud. Exceptional grip with Contagrip sole and EnergyCell+ cushioning.
Salomon
Salomon ADV Skin 12
Chaleco de hidratación de 12 litros con sistema SensiFit. Dos soft flasks frontales de 500 ml incluidas. Bolsillos de fácil acceso y ajuste ceñido sin rebotes.
Black Diamond
Black Diamond Distance Carbon Z
Ultralight carbon Z-pole foldable trekking poles. 137 g per pole in 110 cm length, 33 cm folded. EVA grip and adjustable strap. The trail running reference.
Hoka
Hoka Speedgoat 7
The best-selling trail shoe in the US and an absolute ultra-trail classic. Max Hoka cushioning, a Vibram Megagrip outsole with 5 mm lugs for grip in mud and technical terrain, and a snug Matryx upper. Built to eat up kilometres without punishing your legs in long races.
Altra
Altra Lone Peak 9
Trail running shoe with zero drop and wide FootShape toe box that allows natural toe splay. 25 mm stack with EGO foam for balanced cushioning without losing ground contact. MaxTrac outsole with 3.5 mm lugs, ideal for non-technical trails, forest tracks and long-distance paths.
New Balance
New Balance Fresh Foam X Hierro v9
The model breaking into Spain's best-seller charts. Fresh Foam X midsole with a solid balance between cushioning and ground feel, a Vibram Megagrip outsole, and a comfortable last suited to wide feet. A reliable all-rounder for training runs and mountain races of any distance.
Saucony
Saucony Peregrine 16
The all-round trail shoe par excellence, with excellent reviews across every type of runner. PWRTRAC outsole with 5 mm lugs for grip on mixed and technical terrain, balanced PWRRUN cushioning, and rock-plate protection depending on the version. The perfect middle ground between responsiveness and protection.
Freet
Freet Feldom 3
100% barefoot trail shoe with zero drop, minimal stack (6 mm sole) and anatomical last that respects the natural width of the foot. No midsole cushioning: maximum proprioception and ground feedback. Multi-directional lugs for dirt trails and paths. Designed for runners already adapted to minimalist footwear or those transitioning gradually from cushioned natural footwear.
Tips
- •Zapatillas de trail con buen agarre: terreno de bosque y pradera que puede estar húmedo
- •Mochila o chaleco de hidratación para llevar el material obligatorio
- •Cortavientos con capucha obligatorio: el tiempo cambia rápido en Aralar
- •Bastones no obligatorios pero útiles en la 26K con 1.200m D+
Which shoes for Lakuntza-Aralar Mendi Lasterketa?
Which footwear fits based on the race's terrain and weather
Which GPS watch for Lakuntza-Aralar Mendi Lasterketa?
Which watch has the battery to last based on your estimated finish time
Best Trail Running Poles 2026: Comparison and Buying Guide
The best trail running poles in 2026, compared on technical criteria: Black Diamond Distance Carbon Z, Leki Ultratrail FX.One, Komperdell Carbon FXP Trail and Cascade Mountain Tech. Weight, folded length, aluminium vs carbon, technique and how to pick your size.
Best Trail Running Hydration Vests 2026: Comparison and Buying Guide
In-depth comparison of the best hydration vests and packs for trail running in 2026: Salomon ADV Skin 12 Set, Salomon Active Skin 8, CamelBak Octane, Compressport UltRun Vest, NNormal Race Vest, AONIJIE 10L and HANKER waist belt. Soft flasks vs reservoir, how many litres by distance, how to stop the vest bouncing and how much water to carry.
Best Value Trail and Mountain GPS Watches 2026: Comparison and Buying Guide
The best value-for-money trail and mountain GPS watches in 2026: Coros Pace 3, Amazfit T-Rex 3 and Cheetah Pro, Garmin Forerunner 165 and Suunto Race 2. How much a good trail watch costs, which ones have cheap offline maps, whether an Amazfit performs like a Garmin and which watch to buy for your budget. Figures verified against the manufacturer.
Nutrición para la Lakuntza-Aralar
NutritionLa 26K requiere planificación nutricional. La 13K se puede gestionar con nutrición básica.
Maurten
Maurten Gel 100
Gel de hidrogel con 25g de carbohidratos. La tecnología de hidrogel encapsula los carbohidratos para una absorción sin molestias gástricas. Sabor neutro, sin edulcorantes artificiales. Usado por corredores de élite en maratón y ultra.
226ERS
226ERS Isotonic Drink
Bebida isotónica en polvo de la marca española 226ERS. Aporta carbohidratos, electrolitos y minerales para mantener la hidratación durante el ejercicio. Fórmula con amilopectina para absorción rápida sin molestias digestivas.
Crown Sport Nutrition
Crown Sport Nutrition 3:1 Recovery+
Recuperador muscular a base de proteína de suero aislada (whey isolate) con ratio carbohidratos-proteína 3:1, enriquecido con L-Leucina y L-Glutamina. Certificado Informed Sport y sin alérgenos añadidos. Formato de 750 g, sabor sandía.
GU
GU Energy Gel Original
Gel energético con 100 calorías y 21g de carbohidratos por sobre. Mezcla de maltodextrina y fructosa para absorción óptima. Incluye aminoácidos y electrolitos. El gel más usado en ultratrails de todo el mundo.
Victory Endurance
Victory Endurance Total Recovery
Preparado en polvo para bebida de recuperación post-entreno con carbohidratos, electrolitos y proteína en ratio BCAA 2:1:1. Incluye 12 vitaminas y 9 minerales para acelerar la recuperación muscular tras un trail largo. Formato de 1250 g, sabor sandía.
226ERS
226ERS Recovery Drink
Muscle recovery shake from Spanish brand 226ERS. Formula with whey protein, amylopectin, amino acids (including glutamine and BCAAs) and minerals. Carb-to-protein ratio optimised for the post-exercise window. Good taste and digestive tolerance.
226ERS
226ERS Sub9 Pro Salts Electrolytes
The caffeinated version of Sub9 Salts: 250 mg of sodium and 40 mg of caffeine per capsule, plus potassium, magnesium and ginger. Made for the final stretch of an ultra, when you need to replace salts and get a lift without opening another caffeine gel.
226ERS
226ERS Sub9 Salts Electrolytes
Mineral salt capsules with 250 mg of sodium each, plus potassium, magnesium and ginger extract for better digestive tolerance. The highest sodium per capsule from Spain's benchmark endurance brand. Zero calories: you replace salts without touching your gel plan.
Tips
- •Para la 26K: llevar 3-4 geles y sales minerales
- •Para la 13K: 1-2 geles son suficientes
- •Mínimo 500 ml de líquido obligatorio: lleva isotónico
- •Desayuno completo 2-3 horas antes de la salida
Cómo llegar a Lakuntza
TransportLakuntza está en la Barranca navarra, bien comunicada por autovía desde Pamplona y San Sebastián.
Browse all transportTips
- •Desde Pamplona: A-10 dirección Alsasua, 40 km (~30 min)
- •Desde San Sebastián: AP-1 hasta Alsasua, luego A-10, 75 km (~50 min)
- •Desde Bilbao: AP-68/AP-1 hasta Alsasua, luego A-10, 100 km (~1h)
- •Aeropuerto más cercano: Pamplona (PNA) a 45 km
Alquiler de coche para Lakuntza
Car RentalCoche recomendable para llegar a Lakuntza. Transporte público limitado en fin de semana.
DRIVALIA
DRIVALIA Alquiler de vehículos por Suscripción CarCloud Country Plus
SUV/crossover vehicle rental subscription, ideal for reaching mountain races via rural roads and forest tracks.
DRIVALIA
DRIVALIA Alquiler de vehículos por Suscripción CarCloud City
Urban vehicle rental subscription, perfect for getting to races with good highway and conventional road access.
Carla
Carla Car Rental - Reserva ahora, paga después
Car rental comparison in over 180 countries with free cancellation. Book now and pay when you pick up the vehicle, no hidden fees or upfront card charges.
Hertz
Hertz - Alquiler de coches
Car rental with one of the world's most recognised brands, with offices at airports and cities across Spain.
Tips
- •Recoger en Pamplona o San Sebastián y conducir por autovía
- •Aprovecha para explorar la Barranca navarra y el Parque Natural de Aralar
Seguro deportivo para la Lakuntza-Aralar
InsuranceLa inscripción para no federados incluye seguro de accidentes y responsabilidad civil.
Browse all insuranceTips
- •Si estás federado, tu licencia cubre la carrera
- •Si no estás federado, el seguro va incluido en la inscripción
- •La Federación Navarra de Montaña ofrece licencias de un día
Cuidado corporal para la Lakuntza-Aralar
Body CareCarrera de montaña con tramos de bosque húmedo y prados. Prevención de rozaduras y ampollas.
Lurbel
Lurbel Desafío Four
Ankle-length competition socks with Regenactiv fabric and breathable mesh. Heel and toe reinforcements, flat seams and wrinkle-free fit. Spanish brand designed for trail running. Ultralight and quick-drying.
Buff
Buff CoolNet UV+
Multifunctional tubular with UPF 50+ UV protection and cooling technology. Can be worn as neck gaiter, headband, balaclava or wristband. CoolNet fabric reflects UV rays and cools the skin by evaporation.
Julbo
Julbo Aerospeed
Sport sunglasses with Reactiv photochromic lenses that automatically adapt to light conditions (category 1 to 3). Designed for trail running with non-slip temples and integrated ventilation.
OOFOS
OOFOS OOriginal Sport
Unisex recovery sandal with patented OOfoam technology, which absorbs 37% more impact than conventional EVA foam and reduces stress on feet, ankles and back after exertion. Closed thong-style toe post with built-in arch support in the footbed. Machine washable.
Therabody
Theragun Mini (2.ª generación)
Compact massage gun with QuietForce motor and 3 speeds (1750-2400 percussions/min). Weighs just 500g and fits in your race vest or bag. Ideal for self-massage of quads, calves and glutes after a trail.
Compex
Compex Ayre Recovery Boots
Pneumatic pressotherapy boots with 4 sequential air chambers. Dynamic compression that improves venous return and speeds up toxin elimination after mountain races. 3 pressure levels and 20-30 minute sessions. Built-in rechargeable battery.
Salomon
Salomon Mangas Running
Lightweight, breathable and absorbent running sleeves from Salomon, with a comfortable adaptable fit for variable mountain temperature conditions.
Salomon
Salomon Polaina Cuello Merino
Salomon merino wool neck gaiter. Natural warmth, breathable and odour-resistant even after several uses without washing, key for multi-day ultras. Versatile use in the mountains and premium trail running.
Tips
- •Vaselina en pies y zonas de roce para prevenir ampollas
- •Calcetines técnicos de trail: los prados de Aralar pueden estar húmedos
- •Gorra o visera para los tramos expuestos al sol
Protección solar para la Lakuntza-Aralar
Sun ProtectionFinal de mayo en montaña: sol frecuente con radiación UV moderada-alta en las cumbres.
ISDIN
ISDIN Fotoprotector Fusion Water SPF 50+
Ultralight water-phase facial sunscreen with SPF 50+. Fluid texture that absorbs instantly with no greasy residue, ideal for applying during a race. Water and sweat resistant.
Sun Bum
Sun Bum Sunscreen Lip Balm SPF 30
Lip balm with SPF 30 sun protection in stick format. Moisturises and protects lips from sunburn, a spot many runners forget. Coconut flavour, paraben-free.
Cantabria Labs
Heliocare 360º Sport Transparent Stick SPF 50+
Transparent SPF 50+ sun stick, 25 g, with 360º protection (UVA, UVB, visible light and infrared). Goes on dry in seconds over face, ears, neck and bald scalp with no sticky hands and no white cast: the format built for reapplying at an aid station. High water and sweat resistance, from a Spanish pharmacy brand.
Columbia
Columbia Schooner Bank II Cachalot
Legionnaire-style cap with neck flap, ideal for long-duration races with intense sun exposure. Covers the neck and ears, two of the areas most prone to sunburn in the mountains.
Julbo
Julbo Aero
Sports sunglasses with a Reactiv photochromic lens that automatically adapts to changing light, an ultralight panoramic frame and the Air Link temple system for a secure, pressure-free fit. Built for high-mountain trail running, where light shifts constantly between forest, rock and open summits.
Buff
Buff Venture Gorra 5 Panel
Lightweight 5-panel cap with UPF 50+ protection, breathable fabric and comfortable fit. Ideal for summer trail running races where weight and ventilation are a priority.
d'Alba
d'Alba Air Fit Fresh Stick SPF 50+ PA++++
Facial SPF 50+ PA++++ sun stick, 19 g, Korean skincare, vegan and fragrance-free. Dry, powdery finish, not sticky, doesn't sting the eyes when you sweat: comfortable for daily training and shorter races. The lightest and cheapest option in the comparison.
Piz Buin
Piz Buin Mountain SPF 50+
Mountain sunscreen with SPF 50+ formulated for extreme altitude conditions. Extra protection against intensified UV radiation and cold wind. Rich texture that protects skin from dehydration.
Tips
- •Crema solar SPF 50 en cara, cuello y brazos
- •Protector labial con SPF
- •En las cumbres de Aralar (~1.400 m) la radiación UV es más intensa
Best Sunscreen for Runners 2026: 7 Sweat-Proof SPF 50 Picks
Which sunscreen survives a sweaty long run? We tested 7 SPF 50 sweat-proof picks — creams, sticks and a lip balm — against heat, altitude UV and hours of sweat. See the winner.
Frequently Asked Questions
- When is the Lakuntza-Aralar 2026?
- The 21st Lakuntza-Aralar Mendi Lasterketa takes place on Sunday, May 31, 2026, starting from the main square in Lakuntza (Navarra, Spain).
- What distances does the Lakuntza-Aralar have?
- Two competitive distances: 26K (1,200m elevation gain) and 13K (650m elevation gain). There is also a non-competitive 13K mountain walk open to all ages.
- What is the mandatory gear?
- A liquid container of at least 500 ml, a thermal blanket, and a long-sleeved hooded windbreaker.
- What are the time limits?
- The 26K has a 4-hour cutoff and the 13K has a 2 hour 30 minute cutoff.
- How do I get to Lakuntza?
- Lakuntza is in the Barranca valley of Navarra, 40 km from Pamplona via the A-10 motorway. Also accessible from San Sebastián (75 km) via the AP-1/A-10.
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