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Sorginen Lasterketa
Photo: Asier Sarasua Aranberri (Wikimedia Commons, CC BY-SA 2.0) (opens in a new tab)

Atxondo

Sorginen Lasterketa

Sunday, 3 October 2027estimated date

Trail 21K

21km D+ 1700m

Trail 11K

11.7km D+ 890m

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Your checklist for Sorginen Lasterketa

What you need, category by category, with our #1 pick for this race. Tick what you already have.

0 of 7 ready

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  1. GPS watch

    Garmin Instinct 3 AMOLED 45 mm

    Onboard topo maps, unlike the Instinct 3 Solar

    Downside: Shorter battery life than the Instinct 3 Solar (no solar charging or MIP display)

    View on Amazon →(opens in a new tab)
  2. Gear

    Reliable-grip shoes: Urkiola's wet limestone is very slippery

    Salomon Speedcross 6

    Exceptional grip in mud and technical terrain

    Downside: Average durability on pavement

    View on Amazon →(opens in a new tab)
  3. Nutrition

    Aim for 60 g of carbs per hour on the long race

    Maurten Gel 100

    Hydrogel technology: excellent gastric tolerance

    Downside: High price compared to other gels

    View on Amazon →(opens in a new tab)
  4. Sun Protection

    SPF 50 on face and neck before the start

    ISDIN Fusion Water Sunscreen SPF 50+

    Ultralight texture, feels invisible on skin

    Downside: Small format (50 ml), may run short on ultras

    View on Amazon →(opens in a new tab)
  5. Body Care

    Anti-chafe on feet and groin before starting

    BodyGlide Original Anti-Chafe Balm

    Easy-to-apply stick format, even with sweaty hands

    Downside: Higher price than traditional petroleum jelly

    View on Amazon →(opens in a new tab)
  6. Car Rental

    Pick up the car at Bilbao airport or station

  7. Mandatory

    Waterproof jacket

    The Anboto ridge is exposed; the weather changes fast in October.

  8. Trip logistics

    Registration, travel and insurance: what you should have sorted before race day.

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Seasonal kit

Rain and mud at Sorginen Lasterketa: pack this kit

Grippy shoes, rain jacket, gaiters and blister protection for a wet race.

See the full kit : Rain and Mud Trail Running Kit 2026: What to Bring to a Wet Race

Mandatory Gear

According to the official race regulations

  • Waterproof jacket

    The Anboto ridge is exposed; the weather changes fast in October.

Items tagged “Mandatory” are in the checklist above, with a recommended product.

Race data

Terrain

Mountain

Difficulty

Advanced

Distance

2 modalities

Visit official website(opens in a new tab)
  • Trail 21K

    Distance
    21 km
    Elevation Gain
    D+ 1700m
    Max Time
    5h
  • Trail 11K

    Distance
    11.7 km
    Elevation Gain
    D+ 890m
    Max Time
    3h
Will your watch battery last the ~6 h of Sorginen Lasterketa?Worked out for the longest course (21 km). See which watches reach the finish with GPS on and which die on the way.Check my watch

Sorginen 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 15 °C: guide and kit →

Typical weather for the race date (10-year average)

Temperature

12°C – 21°C

Rain

40%

Wind

13 km/h

Sunshine hours

8h

Gear recommendations

Bring a waterproof jacket (40% chance of rain)

Asics Gel-Trabuco 14 GTX

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.

View on Amazon →
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Berghaus Paclite 2.0 GTX

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.

View on Amazon →
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Brooks Cascadia 20 GTX

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.

View on Amazon →
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Gore Wear C5 GORE-TEX Glove

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.

View on Amazon →
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Gore Wear M GORE-TEX Thermo Glove

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.

View on Amazon →
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Gore Wear R7 GTX Shakedry

Gore Wear

Gore Wear R7 GTX Shakedry

Ultralight Gore-Tex Shakedry waterproof jacket (110 g). Full waterproofing without an inner membrane, highly breathable. The benchmark for mountain runners.

View on Amazon →
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Nike Pegasus Trail 5 GORE-TEX

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.

View on Amazon →
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Salomon Bonatti Pro Waterproof Glove

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.

View on Amazon →
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Salomon Bonatti WP

Salomon

Salomon Bonatti WP

Ultralight waterproof windproof jacket (135 g). Taped seams, adjustable hood and back ventilation. Packs into its own pocket.

View on Amazon →
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Salomon Speedcross 6 GTX

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.

View on Amazon →
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Sealskinz Waterproof Lightweight Glove

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.

View on Amazon →
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Shokz OpenRun

Shokz

Shokz OpenRun

Open-ear bone conduction headphones with IP67 rating: they take rain, mud and a rinse under the tap. Up to 8 h of battery and quick charge (10 min for 1.5 h). The most rugged pick of the range for training in bad weather.

View on Amazon →
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TRIWONDER Waterproof Trail Gaiters

TRIWONDER

TRIWONDER Waterproof Trail Gaiters

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.

View on Amazon →
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Sorginen Lasterketa

Sorginen Lasterketa — the “witches’ race” — is one of the classic fixtures on the mountain calendar of the Duranguesado. It starts in Axpe, the main settlement of the Atxondo municipality (Bizkaia), and heads into the Urkiola Natural Park to circle the unmistakable limestone bulk of Anboto. The long race is 21 kilometres with around 1,700 metres of positive elevation, with an 11.7-kilometre option for those wanting less punishment.

A 21-kilometre course

The route gives no respite: it climbs from the valley to the base of the Anboto ridge on grass and beech-wood paths, crosses the high part of Urkiola over limestone rock and descends technically towards Axpe. At 80 metres of climbing per kilometre, it is a short but brutal race, closer to a linked vertical kilometre than to runnable trail. Wet limestone and frequent fog on the ridge demand a sure foot.

Anboto and the goddess Mari

Anboto (1,331 m) is the most myth-laden mountain in the Basque Country: its north face hides the cave where, according to tradition, Mari lives — the chief deity of Basque mythology, mistress of weather and earth. The sorginak — witches — that give the race its name were part of that same imaginary world. Running here is running through the symbolic heart of Euskal Herria.

Atxondo beyond the race

The Atxondo valley is known for its food — one of the most famous grill restaurants in the Basque Country is here — and for the Urkiola beech wood, spectacular in October. The Urkiola sanctuary, at the top of the pass, is worth the visit. See more races in the Basque Country and plan your weekend with the planner.

360Complete Pack

Sorginen Lasterketa 2026 registration

Registration

A classic Duranguesado race with almost two decades of history, scoring for the Durangaldea Cup. Places are limited because of the natural-park section.

Browse all registration

Tips

  • •Online registration from the official race website
  • •Choose between the 21K and the 11.7K when you register
  • •You need a Basque mountain federation (EMF) licence or one-day insurance
  • •Bib collection on Saturday afternoon and early Sunday in Axpe

Where to stay for Sorginen Lasterketa

Accommodation

Atxondo is rural; Durango, 10 minutes away, has the area's hotels.

Browse all accommodation

Tips

  • •Farmhouse guesthouses in Atxondo, Axpe and Apatamonasterio
  • •Hotels in Durango, well connected by motorway and train
  • •Bilbao, 40 minutes away, for more capacity and city life
  • •Axpe is famous for its food: book a table well ahead

Gear for Sorginen Lasterketa

Gear

21 km and 1,700 m D+ crossing the high part of Urkiola. Limestone rock, wet grass and possible fog on the Anboto ridge.

Browse all gear

Tips

  • •Reliable-grip shoes: Urkiola's wet limestone is very slippery
  • •A waterproof jacket is mandatory: the ridge is wind-exposed
  • •Poles very useful at 80 m of climbing per kilometre
Salomon Speedcross 6

Which shoes for Sorginen Lasterketa?

Which footwear fits based on the race's terrain and weather

→
Garmin Instinct 3 AMOLED 45 mm

Which GPS watch for Sorginen Lasterketa?

Which watch has the battery to last based on your estimated finish time

→
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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.

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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.

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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.

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Nutrition for Sorginen Lasterketa

Nutrition

Between 2 and 5 hours of effort depending on distance. Aid stations on course, but carry your own gels on the 21K.

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Tips

  • •Aim for 60 g of carbs per hour on the long race
  • •Electrolytes: you sweat more than you think in the Atlantic humidity
  • •Solid breakfast 2-3 hours before the start

How to get to Axpe-Atxondo

Transport

Atxondo is in the heart of the Duranguesado, very well connected with Bilbao and Donostia.

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Tips

  • •From Bilbao: 40 min via the A-8 and N-634 to Durango, then the BI-623
  • •Euskotren train to Durango, then taxi or car for the last 10 minutes
  • •Bilbao airport (BIO) 45 min away

Car rental for the Duranguesado

Car Rental

With a car you can link the weekend with Urkiola, the Duranguesado and the Bizkaia coast.

Browse all car rental

Tips

  • •Pick up the car at Bilbao airport or station
  • •Make the most of it by visiting the Urkiola sanctuary and the beech wood in autumn

Sports insurance for Sorginen Lasterketa

Insurance

A federated mountain race with a ridge section. Insurance is mandatory to take part.

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Tips

  • •Valid EMF/FEDME licence or one-day insurance is mandatory
  • •Registration includes race accident insurance
  • •Mountain rescue cover recommended for the Anboto section

Body care for Sorginen Lasterketa

Body Care

A long technical descent and wet grass: look after feet and ankles.

Browse all body care

Tips

  • •Anti-chafe on feet and groin before starting
  • •Well-fitting technical socks for the limestone descents
  • •Compression socks for recovery afterwards

Sun protection for Sorginen Lasterketa

Sun Protection

On clear days, the Anboto ridge is completely exposed to the sun.

Browse all sun protection

Tips

  • •SPF 50 on face and neck before the start
  • •There is not a single tree up high: radiation is intense
  • •SPF lip balm for the ridge wind

Frequently Asked Questions

When is Sorginen Lasterketa 2026?
Sorginen Lasterketa 2026 takes place on Sunday, October 4, 2026, starting and finishing in Axpe-Atxondo (Bizkaia). It is one of the classic races of the Duranguesado.
What distances does it have?
The long race is 21 km with around 1,700 m of positive elevation. There is a short 11.7 km, 890 m D+ option.
What does the name mean?
Sorginen Lasterketa means "the witches' race" in Basque. It refers to the Basque mythology of Anboto, home of the goddess Mari, and to the sorginak that tradition placed in these mountains.
Does it score for any cup?
Yes, Sorginen Lasterketa scores for the Durangaldea Cup (Durangaldeko Kopa) of mountain races.
How do I get to Axpe-Atxondo?
Axpe is the main settlement of the Atxondo municipality, in the Duranguesado, 10 minutes from Durango and about 40 from Bilbao via the N-634 and the BI-623 towards the Urkiola pass.

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