Photo: Urduñako Mendi Lasterketa / Gualdetxu MBTT (opens in a new tab)Urduña (Orduña)
Urduñako Mendi Lasterketa
Sunday, 8 November 2026
Race data
Terrain
Mountain
Difficulty
Advanced
Distance
3 modalities
Trail 33K
- Distance
- 33 km
- Elevation Gain
- D+ 1750m
- Max Time
- 5h 30min
Relay 33K
- Distance
- 33 km
- Elevation Gain
- D+ 1750m
- Max Time
- -
Popular 14K
- Distance
- 14 km
- Elevation Gain
- D+ 550m
- Max Time
- -
| Modality | Distance | Elevation Gain | Max Time | Price |
|---|---|---|---|---|
| Trail 33K | 33 km | D+ 1750m | 5h 30min | - |
| Relay 33K | 33 km | D+ 1750m | - | - |
| Popular 14K | 14 km | D+ 550m | - | - |
Will your watch battery last the ~8 h of Urduñako Mendi Lasterketa?Worked out for the longest course (33 km). See which watches reach the finish with GPS on and which die on the way.Check my watch Check my watchYour checklist for Urduñako Mendi Lasterketa
What you need, category by category, with our #1 pick for this race. Tick what you already have.
0 of 6 ready
GPS watch
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)Garmin Forerunner 570
Full-color topo maps, a first for the Forerunner line
Downside: Shorter battery life than a Forerunner 965 with maps on
Gear
Deep-lug shoes: beech-forest paths and limestone are slippery in the rain
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
Salomon Speedcross 6
Agarre excepcional en barro y terreno técnico
Downside: Durabilidad media en asfalto
Nutrition
One gel or bar every 40-45 minutes, especially in the second half
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
226ERS Isotonic Drink
Marca española referente en nutrición deportiva
Downside: Requiere preparación previa con agua
Sun Protection
SPF lip balm against wind and cold at altitude
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
Sun Bum Sunscreen Lip Balm SPF 30
Stick format easy to apply mid-race
Downside: SPF 30 may fall short at extreme altitude
Body Care
Anti-chafe on feet and underarms: there are water crossings
Done, you already have it
Car Rental
Pick it up at Bilbao airport
Done, you already have it
View on Amazon →(se abre en una pestaña nueva)
DRIVALIA Alquiler de vehículos por Suscripción CarCloud Country Plus
Trip logistics
Registration, travel and insurance: what you should have sorted before race day.
Affiliate links: if you buy, we earn a commission at no extra cost to you.
Urduñako Mendi Lasterketa requires mandatory gear: get it sorted early
Buying guides with the best value for money, picked for this kind of terrain.
Swipe to see all 4 comparisons
Historical weather
What to wear at 10 °C: guide and kit →
Typical weather for the race date (10-year average)
Temperature
8°C – 15°C
Average 11°C
Rain
63%
4.0 mm avg
Wind
19 km/h
max. average
Sunshine hours
7h
daily average
Gear recommendations
Bring a waterproof jacket (63% 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.
Brooks
Brooks Cascadia 20 GTX
The Cascadia 20 with a GORE-TEX membrane: stability and protection for rocky mountain terrain, keeping the foot dry on cold, rainy days.
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.
Salomon
Salomon Speedcross 6 GTX
The Speedcross 6 with a GORE-TEX membrane: the same aggressive 5 mm lugs for mud and soft ground, now waterproof for winter, rain and snow.
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.
Bring thermal layers (low of 8°C)
Buff
Buff Thermonet
Buff tubular térmico con tecnología Primaloft. Retiene el calor corporal, ultraligero y polivalente: gorro, braga, cinta. Ideal para alta montaña.
Craft
Craft Pro Hypervent LS Wind Top
Thermal top with a windproof ripstop panel on the chest and a highly ventilated soft jersey back. Built for high-intensity sessions in cold, windy conditions, with long cuffs and thumb loops.
HANKER
HANKER Braga de Cuello Térmica
Unisex thermal seamless neck gaiter in Soft Air Plus fabric (97% polyester). Seamless fit designed for trail running, cycling, motorcycling and outdoor sports. A budget alternative to Buff for moderate cold.
Icebreaker
Icebreaker Merino 200 Oasis LS Crewe
Long-sleeve thermal top in 100% merino wool (200g). Natural temperature regulation, genuine multi-day odor resistance and a soft, non-itch handfeel from the fine merino yarn.
Odlo
Odlo Active Warm Eco
Camiseta térmica de manga larga con tejido reciclado y tratamiento antiolor. Regulación térmica activa, ideal como capa base en montaña.
Odlo
Odlo I-Thermic Longsleeve Mujer
Women's long-sleeve thermal top with insulating panels placed over cold-sensitive areas (lower back and kidneys). A mid-layer built for genuinely cold winter conditions, mountain outings or cross-country-style trail sessions.
ROCKBROS
ROCKBROS Pasamontañas Térmico y Cortaviento
Thermal windproof balaclava covering head, ears, cheeks and neck. Designed for cycling and motorcycling, it works just as well on windy, freezing trail runs.
Salomon
Salomon Agile LS Tee
Lightweight quick-dry polyester long-sleeve tee with underarm mesh, a side pocket and reflective details. Works as a standalone layer in mild cold or as a base layer under a windbreaker on colder days.
Salomon
Salomon Cross Run Tight
Mallas largas de trail con tejido elástico y transpirable. Cintura ajustable, bolsillo trasero con cremallera. Protección contra el frío y la vegetación.
Salomon
Salomon Cross Warm Glove
Guantes térmicos de running con palma antideslizante y puntas táctiles. Ligeros, cálidos y compatibles con bastones.
Under Armour
Under Armour ColdGear Armour Compression Mock
Compression thermal top with a dual-layer fabric: ultra-warm brushed interior and quick-dry exterior. Second-skin compression fit with stretch mesh panels at the back and underarms for ventilation without losing warmth.
Under Armour
Under Armour ColdGear Armour Compression Mock Hombre
Men's high-neck thermal compression top: brushed interior that holds heat and a quick-dry outer. Base layer for cold-weather runs.
Forecast for 8 November
Weather forecast from Open-Meteo (may change until race day)
Urduñako Mendi Lasterketa
The Urduñako Mendi Lasterketa is the mountain race of Urduña (Orduña), the only inland city in Bizkaia and one of the oldest in the Basque Country. Organised by the Gualdetxu MBTT association, it reaches its 9th edition in 2026 with three formats: a 33 km individual trail, a relay race and a 14 km popular race. Start and finish are in Fueros Square, in the heart of the old town.
A 33 km route through the Sierra Salvada
The 33 km, 1,750 m D+ trail is a loop through rivers, waterfalls and ancient beech forests. It passes Tertanga, the Fraileburu rock formation and Mount Txolope, descends the historic Castile-Bizkaia road, climbs Bedarbide (1,041 m, the high point) between streams and waterfalls, follows the Senda Negra under spectacular cliffs and returns through the Valle de los Milanos.
- Trail 33 km: 1,750 m D+, 09:30 start, 5 h 30 min cut-off, 275 places
- Relay 33 km: two legs (17 + 16 km) with the exchange at the Txoza spring
- Popular 14 km: 550 m D+, 10:00 start, 200 places
November in the mountains: mud, water and a single aid station
The 8 November date all but guarantees wet, technical ground. With one full aid station at km 16.8, go self-sufficient and in shoes with serious grip; compare options in our guide to the best trail shoes for mud. If you sleep in Urduña, your entry gets a 20% discount.
Urduña beyond the race
The medieval old town, the historic customs house and the views from the Orduña pass make the weekend a full getaway. Discover more races in the Basque Country or build your season with the race planner.
Mandatory Gear
According to the official race regulations
Charged, with the organisation's emergency number saved
Recommended in November; confirm the mandatory gear in the official rules
360Complete Pack
Urduñako Mendi Lasterketa 2026 registration
RegistrationRegistration has been open since 1 May on Kirolprobak. 275 bibs for the 33 km trail and 200 for the 14 km popular race.
Tips
- •20% discount if you have confirmed accommodation in Urduña
- •Three formats: 33 km trail, 33 km relay and 14 km popular race
- •Trail cut-off: 5 h 30 min
- •Check the official rules for mandatory gear and insurance
Where to stay for the Urduñako Mendi Lasterketa
AccommodationBooking accommodation in Urduña gets you 20% off the entry fee and saves you an early-morning drive.
Tips
- •Urduña old town: country houses and guesthouses minutes from the start
- •Bilbao (45 km) and Vitoria-Gasteiz (30 km) offer more choice
- •Book early: November is low season but the town has few beds
- •Ask your accommodation for the race discount code
Gear for the Urduñako Mendi Lasterketa
GearNovember in the Sierra Salvada means mud, wet rock and technical descents. Aggressive-grip shoes, a waterproof layer and poles if you are going for the 1,750 m D+.
Tips
- •Deep-lug shoes: beech-forest paths and limestone are slippery in the rain
- •Windproof or light waterproof jacket: weather changes fast at Bedarbide (1,041 m)
- •8-12 l hydration vest to carry water and a layer
- •Thin gloves: hands suffer on exposed climbs in November
Which shoes for Urduñako Mendi Lasterketa?
Which footwear fits based on the race's terrain and weather
Which GPS watch for Urduñako Mendi Lasterketa?
Which watch has the battery to last based on your estimated finish time
Best Neck Gaiter (Buff) for Trail Running 2026: Comparison & Buying Guide
Comparison of the best neck gaiters for trail running in 2026: Buff Original, Midweight, Windproof, DryFlx, CoolNet UV+, Thermonet, HANKER and Salomon Merino. Which to pick based on sun, wind, cold or budget.
Best Thermal Base Layer for Trail Running 2026: Comparison & Buying Guide
The best thermal base layers for trail running in 2026: Odlo Active Warm Eco, Icebreaker Merino 200 Oasis, Craft Pro Hypervent, Under Armour ColdGear, Salomon Agile LS Tee and Odlo I-Thermic. Which to pick based on cold, sweat management, merino wool, compression or built-in wind protection.
Best Trail Running Gaiters 2026: 3-Way Comparison
Comparing the 3 best trail running gaiters in 2026: Salomon Trail Gaiters High, Salomon Trail Gaiters Low and TRIWONDER waterproof gaiters. Which to pick by terrain and budget.
Nutrition for the Urduñako Mendi Lasterketa
NutritionWith a single aid station at km 16.8 (Txoza spring), self-sufficiency is key in the 33 km trail.
Tips
- •One gel or bar every 40-45 minutes, especially in the second half
- •Isotonic drink in your vest: there is only one full aid station
- •Electrolyte salts if you race hard, even in November
- •Recovery shake at the finish
Getting to Urduña
TransportUrduña (Orduña) sits at the southern tip of Bizkaia, at the foot of the Sierra Salvada, next to the border with Álava and Burgos.
Tips
- •From Bilbao: about 45 minutes on the A-625
- •From Vitoria-Gasteiz: about 35 minutes
- •Bilbao airport (BIO) is about 50 km away
- •Parking near the old town; arrive with margin before 09:30
Car hire for the Urduñako Mendi Lasterketa
Car RentalWith no direct public transport at start time, a car is the best way to arrive from Bilbao or Vitoria-Gasteiz.
Tips
- •Pick it up at Bilbao airport
- •Combine the race with a weekend trip around Bizkaia or Álava
Sports insurance for the Urduñako Mendi Lasterketa
InsuranceA mountain race with big climbing and technical sections. Check what cover the rules require.
Tips
- •Valid federation licence or day insurance if the organisation offers it
- •Make sure it covers mountain rescue
- •See the insurance section of the official rules
Sun protection for the Urduñako Mendi Lasterketa
Sun ProtectionIn November the sun is mild, but wind and cold punish lips and face on the ridges of the Sierra Salvada.
Tips
- •SPF lip balm against wind and cold at altitude
- •Sweat-resistant face stick for training runs
Body care for the Urduñako Mendi Lasterketa
Body CareRivers, mud and 1,750 m of descent: feet and skin need protection before and recovery after.
Tips
- •Anti-chafe on feet and underarms: there are water crossings
- •Thermal neck gaiter for waiting at the start
- •Dry clothes and comfortable shoes in the car for after the finish
- •Compression socks or a massage gun to recover your legs
Frequently Asked Questions
- When is the Urduñako Mendi Lasterketa 2026?
- The 9th edition takes place on Sunday 8 November 2026 in Urduña (Bizkaia). The 33 km trail starts at 09:30 and the 14 km popular race at 10:00, both from Fueros Square.
- What distances are offered?
- A 33 km individual trail with 1,750 m D+, a 33 km relay (17 + 16 km, with the exchange at the Txoza spring) and a 14 km popular race with 550 m D+.
- When and where do I register?
- Registration opened on 1 May 2026 on the Kirolprobak platform. Runners with confirmed accommodation in Urduña get a 20% discount. Places are limited: 275 runners in the trail and 200 in the popular race.
- What is the cut-off time for the 33 km trail?
- The time limit is 5 h 30 min.
- How do I get to Urduña?
- Urduña is about 45 km from Bilbao and about 30 km from Vitoria-Gasteiz, at the foot of the Orduña pass. A car is the most practical option; the nearest airport is Bilbao (BIO).
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