Alto Rey Trail
Photo: Asociación Cultural La Hincadera / Source

Bustares, Guadalajara

Alto Rey Trail

Saturday, 19 June 2027estimated date

Alto Rey Trail 21K

21.7km D+ 1082m

Alto Rey Trail 11K

11.6km D+ 586m

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📅

Alto Rey Trail 2027: estimated date 19 June 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

Terrain

Mountain

Difficulty

Intermediate

Distance

2 modalities

Official website

Visit
ModalityDistanceElevation GainMax TimePrice
Alto Rey Trail 21K21.7 kmD+ 1082m5h-
Alto Rey Trail 11K11.6 kmD+ 586m3h-

Alto Rey Trail requires mandatory gear: get it sorted early

Buying guides with the best value for money, picked for this kind of terrain.

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What you need

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+9 more products ↓

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

12°C – 23°C

Average 18°C

Rain

30%

1.5 mm avg

Wind

17 km/h

max. average

Sunshine hours

13h

daily average

Gear recommendations

Bring a waterproof jacket (30% 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.

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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.

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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.

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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.

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Gore Wear R7 GTX Shakedry

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.

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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.

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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.

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Salomon Bonatti WP

Salomon

Salomon Bonatti WP

Chaqueta cortavientos impermeable ultraligera (135 g). Costuras selladas, capucha ajustable y ventilación trasera. Se pliega en su propio bolsillo.

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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.

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TRIWONDER Polainas Impermeables Trail

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.

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Sun protection essential (13h sunshine, up to 23°C)

Alto Rey Trail

Alto Rey Trail is a mountain race held every year on the summer solstice from Bustares, a small village in the Sierra Norte de Guadalajara, Spain. Organised by the Asociación Cultural La Hincadera, the race summits Alto Rey peak (1,850m), one of the highest points in the province.

The course

Both distances start from Bustares and climb to the summit of Alto Rey via the Santa Coloma meadow. From the top, on clear days, you can see the towers of Madrid to the south and Moncayo to the north. The terrain combines mountain trails, oak forests, holm oak woodland and the characteristic dry stone walls of the area — Bustares has over 336 km of these traditional constructions.

The distances

The Alto Rey Trail 21K (1,082m D+) is a circular mountain half marathon that, after summiting Alto Rey, descends via Peña de los Gavilanes and Collado del Mediodía to Pradena de Atienza and Gascueña de Bornova before returning to Bustares. The Alto Rey Trail 11K (586m D+) shares the summit climb and descends through the Val de Cabañas valley directly to Bustares.

The solstice race

The 5:00 PM start on June 21 makes this a unique experience: the longest day of the year, with evening light sweeping across the Castilian mountains. The contrast between the heat of the early hours and the cool at higher elevations (up to 1,850m) demands smart hydration and gear management.

Bustares and the Sierra Norte

Bustares lies within the Sierra Norte de Guadalajara Natural Park, one of Spain’s most depopulated areas yet with exceptional natural and architectural heritage. The dry stone walls, centuries-old oak groves and the black architecture villages of the area make the trip an experience that goes well beyond the race itself.

Check our gear checklist to prepare for mountain conditions, and explore more races in Castilla-La Mancha.

Mandatory Gear

According to the official race regulations

Approx. pack cost:~0,00 €Prices may vary. Check the store for the current price.
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360Complete Pack

Alto Rey Trail 2025 Registration

Registration

Registration through RockTheSport. 4th edition organised by the Asociación Cultural La Hincadera de Bustares.

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Tips

  • Online registration at rockthesport.com
  • Registration period: May 14 – June 19
  • Part of the Guadalajara Provincial Mountain Racing Calendar 2025

Where to stay for Alto Rey Trail

Accommodation

Bustares is a small village in the Sierra Norte de Guadalajara. Limited rural accommodation options.

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Tips

  • Rural houses in Bustares and nearby villages (Condemios, Albendiego)
  • Atienza (20 min): medieval town with more accommodation options
  • Sigüenza (40 min): Parador Nacional hotel and varied lodging
  • Book in advance: remote area with limited availability

Recommended gear for Alto Rey Trail

Gear

Mountain terrain reaching 1,850m altitude. 5 PM start in June: warm in the early hours, potentially cool at higher elevations.

Salomon Speedcross 6

Salomon

Salomon Speedcross 6

Salomon's most versatile trail shoe, ideal for technical terrain and mud. Exceptional grip with Contagrip sole and EnergyCell+ cushioning.

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Salomon Soft Flask 250 ml

Salomon

Salomon 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.

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Black Diamond Distance Carbon Z

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.

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Hoka Speedgoat 7

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.

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Altra Lone Peak 9

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.

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New Balance Fresh Foam X Hierro v9

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.

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Saucony Peregrine 16

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.

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Freet Feldom 3

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.

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Tips

  • Trail shoes with good grip: rocky trails and loose terrain
  • Poles optional but useful for the 21K climbs
  • Hydration pack: June in Guadalajara can exceed 30°C
  • Breathable technical shirt and cap for the afternoon sun
Nike Ultrafly

Which shoes for Alto Rey Trail?

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

Garmin Forerunner 570

Which GPS watch for Alto Rey Trail?

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

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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.

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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.

Nutrition for Alto Rey Trail

Nutrition

Aid stations in each village along the route and at the Alto Rey summit.

GU Energy Gel Original

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.

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226ERS Isotonic Drink

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.

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Bocadillo de Guayaba Gourmet Latino

Gourmet Latino

Bocadillo de Guayaba Gourmet Latino

Natural guava bar in individual 26 g format. High in vitamin C and fast-absorbing carbohydrates. Solid texture with easy-open wrapper, perfect for carrying during races. Intense sweet flavor that delivers immediate energy without needing water.

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Maurten Gel 100

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.

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Crown Sport Nutrition 3:1 Recovery+

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.

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Victory Endurance Total Recovery

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.

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226ERS Recovery Drink

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.

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226ERS Sub9 Pro Salts Electrolytes

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.

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Tips

  • The 11K can be completed with minimal extra nutrition
  • For the 21K: carry gels or bars for sections between villages
  • Extra hydration: the 5 PM start in June means heat
  • Electrolytes essential: heat plus altitude causes rapid dehydration
🍫

Best salt tablets and sodium capsules for running 2026

A comparison of the 7 best salt tablets and sodium capsules for running and trail 2026: 226ERS Sub9 Salts, Crown Pro Salt Caps, Victory Endurance, Precision Hydration PH 1500 and more. How many salt tablets to take per hour, how to calculate your sweat rate and which format to choose.

How to get to Bustares

Transport

Bustares is in the Sierra Norte de Guadalajara, accessible by road from Madrid or Guadalajara.

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Tips

  • From Madrid: ~2 hours via A-2 to Jadraque, then CM-110
  • From Guadalajara: ~1 hour via CM-101 and CM-110
  • From Soria: ~1h 30min via N-II and local roads
  • No public transport: car essential

Car rental for Alto Rey Trail

Car Rental

Rural area with no public transport. Car needed to reach Bustares.

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Tips

  • Guadalajara city also has rental offices
  • Mountain roads in good condition but winding

Sports insurance for Alto Rey Trail

Insurance

Mountain race with technical sections and significant altitude.

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Tips

  • Federation licence or day insurance required
  • Nearest hospital in Sigüenza or Guadalajara city
  • Mountain rescue coverage recommended

Body care for Alto Rey Trail

Body Care

Race on the summer solstice with an afternoon start. The combination of heat, altitude and sun exposure requires specific protection.

Buff CoolNet UV+

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.

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Julbo Aerospeed

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.

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OOFOS OOriginal Sport

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.

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Theragun Mini (2.ª generación)

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.

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Compex Ayre Recovery Boots

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.

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Salomon Mangas Running

Salomon

Salomon Mangas Running

Lightweight, breathable and absorbent running sleeves from Salomon, with a comfortable adaptable fit for variable mountain temperature conditions.

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Salomon Polaina Cuello Merino

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.

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Bob and Brad Q2 Mini

Bob and Brad

Bob and Brad Q2 Mini

Mini massage gun designed by two physiotherapists: 430 g, brushless motor with 15 kg stall force and operation under 45 dB. Charges over USB-C from any charger and ships with a case. The value pick for packing recovery into your bag or car boot.

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Tips

  • Sunglasses: the race runs entirely in afternoon sun
  • UV buff or cap for neck and head protection
  • Vaseline on chafe-prone areas: heat increases friction

Sun protection for Alto Rey Trail

Sun Protection

The summer solstice is the longest day of the year. Altitude (up to 1,850m) intensifies UV radiation. Sun protection is essential.

ISDIN Fotoprotector Fusion Water SPF 50+

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.

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Piz Buin Mountain SPF 50+

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.

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Sun Bum Sunscreen Lip Balm SPF 30

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.

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Heliocare 360º Sport Transparent Stick SPF 50+

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.

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Columbia Schooner Bank II Cachalot

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.

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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.

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Buff Venture Gorra 5 Panel

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.

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d'Alba Air Fit Fresh Stick SPF 50+ PA++++

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.

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Tips

  • SPF50+ mandatory: solstice + altitude = maximum UV radiation
  • Apply 30 minutes before the start and reapply at aid stations
  • Protect lips with SPF30+ balm
  • Summit areas are fully exposed with no shade
🧴

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 Alto Rey Trail held?
Alto Rey Trail takes place on the summer solstice (June 21), starting at 5:00 PM from Bustares (Guadalajara, Spain).
What distances does Alto Rey Trail offer?
Two distances: 21K (mountain half marathon) with 1,082m elevation gain and 11K with 586m elevation gain. Both are circular routes from Bustares.
What is the course like?
Both routes summit Alto Rey peak (1,850m) via mountain trails, oak forests and holm oak woodland. The 21K passes through Pradena de Atienza and Gascueña de Bornova before returning to Bustares.
How to get to Bustares?
Bustares is in the Sierra Norte de Guadalajara. From Madrid it's about 2 hours via the A-2 and CM-110. From Guadalajara city, approximately 1 hour.

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