Trail Running Vocabulary in English and Spanish: A Bilingual Guide

Trail Runners on a ridge

Looking for trail running vocabulary in Spanish? Whether you’re a bilingual runner navigating Spanish-language race events, a Spanish-speaking runner exploring English-language trail culture, or an outdoor educator introducing trail running to bilingual groups, this guide covers the essential vocabulary of the sport in both languages.

I started running in high school in the San Francisco Bay Area — cross country and track, competitive enough to run a 4:39 mile, a 9:49 two-mile and to help our team win the California North Coast Section championship. I kept running while at Chabot Community College and then at Brigham Young University, where the mountains above Provo, Utah became my regular training ground. Those one-to-two hour runs in the Wasatch Range were what most people would now call trail running, though the term hadn’t fully taken hold yet. The shift from road to trail felt natural — the terrain demanded more attention, punished inattention, and rewarded the kind of sustained effort that flat road running never quite asked for.

As a trained Spanish-English linguist, I also find trail running linguistically fascinating — it’s one of the few outdoor sports where the English term has been adopted wholesale into Spanish-speaking communities worldwide, while simultaneously competing with well-established Spanish equivalents. That terminological tension is worth understanding, and this guide addresses it directly.

Trail running, carrera de montaña, or ultratrail? A note on terminology

In Spanish-speaking running communities, three terms compete for the same sport: trail running (the English term used directly), carrera de montaña (mountain race — the traditional Spanish term), and carrera de senderos (trail race — used in some Latin American contexts). The International Trail Running Association (ITRA) officially defines the sport in Spanish as “una carrera pedestre abierta a todos, en entorno natural… con el mínimo asfalto posible.” In practice, trail running and trail (used alone) have become the dominant terms in both competitive and recreational contexts across Latin America and Spain — a clear example of English’s ongoing influence on sports vocabulary worldwide. This guide uses all three terms where appropriate.


1. Trail Running Basics — Fundamentos del trail running

English Español Notes / Notas
Trail running Trail running / Carrera de montaña / Carrera de senderos Running on unpaved trails, paths, and natural terrain — distinct from road running by surface, elevation change, and technical demands. Trail running is used directly across all Spanish-speaking running communities. Carrera de montaña is the traditional Spanish term. See the linguistic note above for the full terminology debate.
Road running Carrera en asfalto / Running en carretera Running on paved surfaces — roads, sidewalks, tracks. The baseline from which many trail runners transition. Asfalto (asphalt/pavement) is the key distinguishing term — trail running is defined partly by its absence.
Ultra / Ultratrail Ultra / Ultratrail / Carrera de ultrafondo Any trail race exceeding marathon distance (42km). Ultratrail is widely used in Spanish — though technically a registered trademark of the UTMB race series, the term has become genericized in common usage. Carrera de ultrafondo is the technical Spanish term.
Skyrunning Skyrunning / Carrera de altura High-altitude trail running above 2,000 meters with gradients exceeding 30%. A distinct discipline from trail running with its own governing body (ISF). Popular in the Andes, Pyrenees, and Alps. Skyrunning is used directly in Spanish.
FKT (Fastest Known Time) Tiempo récord conocido / FKT An unofficial record for completing a specific trail or route as fast as possible — unsupported, self-supported, or supported categories. The acronym FKT is used directly in Spanish-speaking trail running communities.
Vertical kilometer (VK) Kilómetro vertical (KV) A race format covering 1,000 meters of vertical gain in the shortest possible horizontal distance. One of the most demanding formats in mountain running. Kilómetro vertical or simply KV is standard in Spanish.
Out and back Ida y vuelta A route that follows the same trail in both directions — to a destination and back the same way. Ida y vuelta (there and back) is universal in Spanish for this route format.
Loop Circuito / Bucle A route that returns to the starting point without retracing steps. Circuito is the standard term in Latin America; bucle is more common in Spain.
Point to point De punto a punto / Travesía A route that starts and ends at different locations. Travesía (crossing/traverse) is commonly used for longer point-to-point mountain routes.

2. Terrain & Trail Features — Terreno y características del sendero

English Español Notes / Notas
Singletrack Sendero estrecho / Singletrack A narrow trail wide enough for only one runner. The preferred surface for technical trail running — more demanding and more rewarding than wide fire roads. Singletrack is widely used directly in Spanish trail running communities.
Fire road / Doubletrack Pista forestal / Camino de doble vía A wide, unpaved road used for forestry and fire access — runnable at speed but less technical than singletrack. Pista forestal is the standard term across Latin America and Spain.
Climb / Ascent Subida / Ascenso / Cuesta arriba An uphill section of trail. In trail running, climbs are often power-hiked rather than run — knowing when to walk uphills is a key skill. Desnivel positivo (positive elevation change) is the technical term for total climbing in a race.
Descent / Downhill Bajada / Descenso / Cuesta abajo A downhill section. Technical descents on loose or rocky terrain are where trail running diverges most dramatically from road running — quad strength, balance, and confidence are essential.
Elevation gain / Vertical gain Desnivel positivo / Ganancia de altitud Total upward vertical distance in a run or race. The primary difficulty metric in mountain running — more meaningful than distance alone. A 50km race with 3,000m of desnivel is a fundamentally different challenge than a flat 50km road race.
Technical terrain Terreno técnico Terrain requiring focused footwork and balance — rocks, roots, scree, steep switchbacks. The defining characteristic of mountain trail running versus road or fire road running.
Scree Pedrera / Pedregal / Canchales Loose rock fragments on a slope — one of the most technically demanding surfaces in mountain running. Pedrera is standard in Spain; pedregal and canchales are regional variants in Latin America.
Switchback Zigzag / Curva cerrada A sharp hairpin turn on a steep trail. Running switchbacks efficiently — cutting the corner vs. following the full arc — is a technique decision that affects both speed and energy expenditure.
False flat Falsa llano / Rampa suave A section that appears flat but has a subtle uphill grade that accumulates fatigue over distance. One of the most psychologically challenging terrain features in ultra running.

3. Running Technique — Técnica de carrera

English Español Notes / Notas
Power hiking Marcha de potencia / Power hiking / Caminata rápida Walking uphill at maximum sustainable effort — often faster and more efficient than running on steep climbs. An essential technique in ultratrail running. Power hiking is widely used directly in Spanish trail running contexts.
Cadence Cadencia Steps per minute. Higher cadence (shorter, faster steps) is generally more efficient on technical terrain and reduces injury risk. Elite trail runners typically run at 170-180 steps per minute.
Stride length Longitud de zancada / Amplitud de paso The distance covered with each step. Trail running typically requires shorter stride length than road running — particularly on technical descents where overstriding leads to falls.
Foot strike Apoyo del pie / Tipo de pisada The part of the foot that contacts the ground first — heel strike (talón), midfoot (mediopié), or forefoot (antepié). Trail terrain naturally encourages midfoot and forefoot striking.
Fartlek Fartlek A training method alternating fast and slow running at varied intensities — named from Swedish for “speed play.” Used directly in Spanish without translation, as in all languages. A standard training tool for trail runners building fitness and speed.
Intervals Intervalos / Series Structured training with alternating high-intensity efforts and recovery periods. Series is the more common term in Latin American running contexts; intervalos is used in more formal training plans.
Tempo run Carrera a ritmo / Rodaje a umbral A sustained run at comfortably hard effort — at or near lactate threshold. Rodaje a umbral (threshold training run) is the technical term; carrera a ritmo is more conversational.
Recovery run Rodaje de recuperación / Carrera suave An easy, low-intensity run designed to promote recovery between harder efforts. Rodaje is the standard Spanish term for a training run — a word with no direct English equivalent that captures the idea of accumulated mileage.
Bonk / Hitting the wall Pájara / Muro Sudden, severe fatigue from glycogen depletion. Pájara is the vivid Spanish cycling and running term — literally “a bird” — for this state of collapse. One of the most culturally specific terms in Spanish endurance sport vocabulary, with no equivalent in English.

4. Gear & Equipment — Equipo y material

English Español Notes / Notas
Trail running shoes Zapatillas de trail / Zapatillas de montaña Running shoes designed for off-road terrain with aggressive lugged outsoles for traction, rock plates for protection, and reinforced uppers. Zapatillas de trail is universal across all Spanish-speaking markets.
Lugs / Grip Tacos / Agarre The rubber protrusions on the outsole of trail shoes that provide traction on soft and loose surfaces. Tacos (studs/lugs) and agarre (grip) are both used in shoe reviews and trail running discussions.
Hydration vest / Pack Chaleco de hidratación / Mochila de hidratación A lightweight vest or pack carrying water (in a bladder or soft flasks) and essential gear. Standard equipment for trail runs and races beyond an hour. Chaleco de hidratación is the vest style; mochila de hidratación for backpack style.
Soft flask Frasco flexible / Bidón blando A collapsible water bottle carried in the front pockets of a hydration vest. Lighter and more packable than rigid bottles. Soft flask is commonly used directly in Spanish trail running gear discussions.
Trekking poles / Running poles Bastones de trail / Bastones de montaña Collapsible poles used on climbs and descents to reduce leg load and improve stability. Permitted in most ultratrail events. Bastones is universal across all Spanish-speaking mountain running communities.
Headlamp Linterna frontal / Frontal A head-mounted light essential for pre-dawn starts, night sections of ultras, and evening runs. Frontal (short for linterna frontal) is the standard conversational term in Spanish running culture.
Gaiters Polainas de trail Low-cut protective covers worn over trail shoes to keep debris — rocks, dirt, seeds — out. Shorter and lighter than hiking gaiters. Essential on dusty or sandy trails.
Mandatory gear Material obligatorio / Equipamiento obligatorio The required safety equipment list for a race — typically including emergency blanket, first aid kit, phone, food, and water. Races check this at registration and may perform spot checks on course.

5. Racing & Competition — Carreras y competición

English Español Notes / Notas
Race bib / Dorsal Dorsal The numbered vest or bib worn during a race for identification. Dorsal is identical in both English and Spanish running communities — the English “bib” is rarely used in Spanish contexts, where dorsal is universal.
Aid station Avituallamiento / Puesto de avituallamiento A designated point on the racecourse where runners receive food, water, and support. Avituallamiento is the standard Spanish term — a word covering both the act of provisioning and the station itself. No single-word English equivalent captures this meaning as precisely.
Drop bag Bolsa de avituallamiento / Drop bag A personal bag deposited at a race checkpoint containing gear, food, and change of clothes. Drop bag is used directly in Spanish race contexts, though bolsa de avituallamiento is the descriptive equivalent.
DNF (Did Not Finish) Abandono / DNF Withdrawing from a race before completing it. Abandono is the standard Spanish term — used in results listings and discussion. The acronym DNF is also used directly in Spanish racing contexts.
Cutoff time Tiempo límite / Corte The maximum allowed time to reach a checkpoint or finish. Missing a cutoff results in disqualification. Corte (cut) is the conversational term in Spanish racing; tiempo límite is the formal equivalent.
Pacer Liebre / Pace / Acompañante A runner who accompanies a competitor for a section of a race to maintain pace and provide support. Liebre (hare) is the traditional Spanish term — borrowed from athletics where a pacemaker sets the early tempo. Pacer is increasingly used directly.
Crew Equipo de apoyo / Crew Support team members who meet a runner at designated crew access points during a race. Crew is used directly in Spanish ultratrail contexts; equipo de apoyo is the descriptive translation.
UTMB (Ultra-Trail du Mont Blanc) UTMB / Ultra Trail del Mont Blanc The most prestigious ultratrail race in the world — 170km around Mont Blanc through France, Italy, and Switzerland. The acronym UTMB is used directly and universally in all languages in the trail running world.

6. Nutrition & Recovery — Nutrición y recuperación

English Español Notes / Notas
Energy gel Gel energético / Gel A concentrated carbohydrate supplement in gel form, consumed during runs for quick energy. Gel (pronounced as in English) is used universally in Spanish running culture.
Energy bar Barrita energética / Barrita A solid food supplement providing carbohydrates, protein, and fat for sustained energy. Barrita (little bar) is the conversational term universally used across Spanish-speaking running communities.
Electrolytes Electrolitos Minerals (sodium, potassium, magnesium) lost through sweat — essential for muscle function and hydration. Replacing electrolytes, not just water, is critical in long mountain efforts. Electrolitos is standard in both clinical and sports nutrition contexts in Spanish.
Hydration Hidratación The practice of maintaining adequate fluid intake during training and racing. Hidratación is identical in structure and meaning — one of many sports science terms shared across English and Spanish.
Carbo loading Carga de carbohidratos / Carbo loading Increasing carbohydrate intake in the days before a race to maximize glycogen stores. Carbo loading is used directly in Spanish sports nutrition contexts.
Active recovery Recuperación activa Low-intensity movement (walking, easy swimming, yoga) performed after hard efforts to accelerate recovery. Contrasted with passive recovery (recuperación pasiva) — complete rest.
DOMS (Delayed Onset Muscle Soreness) Agujetas / Dolor muscular de aparición tardía Muscle soreness appearing 24-48 hours after intense exercise. Agujetas is the vivid, culturally specific Spanish term — literally “little needles,” describing the sensation exactly. One of the most charming examples of Spanish sports vocabulary.
Foam rolling Rodillo de espuma / Foam roller Self-myofascial release using a cylindrical foam roller — a standard recovery tool for trail runners managing quad and IT band soreness after long downhill sections. Foam roller is used directly in Spanish fitness contexts.

Sources Consulted / Fuentes consultadas

The terminology in this glossary was verified against the following references:

  • ITRA (International Trail Running Association) — Official definitions and Spanish-language race materials. itra.run
  • Wikipedia Español, s.v. “Carrera de senderos” and “Ultra trail” — Spanish-language definitions and terminology documentation. es.wikipedia.org
  • Carrerasdemontana.com — Specialist Spanish-language trail running publication; primary source for the terminology debate between trail running, carrera de montaña, and ultratrail.
  • AETRAIL (Asociación Española de Trail Running) — Official Spanish trail running association; Diccionario Trail. aetrail.com
  • Salomon Trail Running — Spanish-language technical running content. salomon.com
  • Trail Run Magazine — English-language A-Z trail running glossary. trailrunmag.com
  • Real Academia Española — Diccionario de la lengua española. dle.rae.es


About the Author

Andrew Lillie is a trained Spanish-English linguist, certified interpreter, and enrolled member of the Chickasaw Nation based in Oregon. He holds a BA from Brigham Young University and a graduate degree in translation from the University of Puerto Rico, and has lived and worked in Argentina and Puerto Rico. A competitive runner in high school and college — cross country, track, and mountain running in the Wasatch Range above Provo, Utah — he has been a lifelong runner across road and trail surfaces. He spent roughly eighteen years leading youth outdoor trips in Washington State, Oregon, and Puerto Rico.

Andrew is the founder of Firefly Linguistic Services LLC and the creator of the Spanish by Topic bilingual vocabulary platform. The terminology in this glossary was compiled from professional trail running, sports science, and linguistic reference sources and reviewed by Andrew Lillie.

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