Date, registration & deadlines
Mar 8, 2026 · Check official website
Local guides
Race data
| Modality | Distance | Elevation Gain | ITRA | Max Time | Price |
|---|---|---|---|---|---|
| Marathon | 46 km | D+ 2600m | - | 8h30 | 50 EUR |
| Half Marathon | 23 km | D+ 1000m | - | - | 30 EUR |
| Short Race | 16 km | D+ 350m | - | - | 20 EUR |
What you need
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
4°C – 12°C
Average 8°C
Rain
43%
2.1 mm avg
Wind
20 km/h
max. average
Sunshine hours
7h
daily average
Gear recommendations
Bring a waterproof jacket (43% chance of rain)
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.
Salomon
Salomon Bonatti WP
Chaqueta cortavientos impermeable ultraligera (135 g). Costuras selladas, capucha ajustable y ventilación trasera. Se pliega en su propio bolsillo.
Bring thermal layers (low of 4°C)
Buff
Buff Thermonet
Buff tubular térmico con tecnología Primaloft. Retiene el calor corporal, ultraligero y polivalente: gorro, braga, cinta. Ideal para alta montaña.
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.
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.
Bring thermal gloves (low of 4°C)
Forecast for March 8
Real-time data from Open-Meteo
Isasa Trail Xtrem
The Isasa Trail Xtrem was born from the passion of a group of runners for the trails around Arnedo, La Rioja’s shoe-making capital and home of the Atom brand. In its third edition, this race has established itself as a key event in the Riojan trail calendar.
The course
From the center of Arnedo, all three distances head into the surrounding mountains. The routes reveal spectacular and lesser-known paths, combining ravines, ridgelines, and trails winding through vineyards and Mediterranean scrubland.
- Marathon (46K) — 2,600m elevation gain, the flagship event. Start at 8:00 AM. Cutoff points at Préjano (10:30), Turruncún (13:15), Valdeherreros (14:00), and finish (16:30).
- Half Marathon (23K) — 1,000m elevation gain, a demanding challenge with the best race profile. Start at 9:00 AM. No cutoff times.
- Short Race (16K) — 350m elevation gain, the gateway to trail running. Start at 9:15 AM. No cutoff times.
A Nordic Walking event (16K) also takes place on the same course as the Short Race.
Terrain and difficulty
The terrain is varied: mountain trails, forest tracks, ravines, and some stretches through vineyards. The Marathon includes the most technical sections with steep climbs and descents. The 16K Short Race is ideal for newcomers to trail, with a gentle and well-marked profile. Review our gear checklist to make sure you have everything you need for race day.
March weather in Arnedo
March in La Rioja marks the transition from winter to spring. Temperatures range from 5 to 15°C, with cool mornings and pleasant middays. Wind can blow on the ridgelines, and occasional rain showers are possible. A light rain jacket is a recommended companion.
Arnedo and La Rioja
Arnedo is Spain’s shoe-making capital, with a centuries-old footwear industry and home to brands like Atom. Beyond industry, the city offers historical heritage and Riojan gastronomy. La Rioja is a perfect destination to combine trail running with wine tourism: wineries, charming villages, and world-class cuisine.
Use our pace calculator to plan your splits for the Marathon 46K, and explore more races in La Rioja.
Mandatory Gear
According to the official race regulations
360 Complete Pack
Isasa Trail Xtrem 2026 Registration
InscripciónThird edition sponsored by Atom. Bibs include a Trango finisher garment (worth €110) for the Marathon and a Trango t-shirt (€39) for all distances.
Browse all inscripciónTips
- • The first 150 Marathon registrants receive Biontech insoles (€30)
- • Bib collection on Saturday March 7 from 11:00 to 14:00 and 15:00 to 19:00, or Sunday from 6:45
- • Briefing on Saturday at 19:30
Where to stay in Arnedo
AlojamientoArnedo has hotels and rural houses. Being a small city, book early for race weekend.
Browse all alojamientoTips
- • Arnedo's town center has accommodation within walking distance of the start
- • March is low season in La Rioja, generally good availability
- • Calahorra (15 min) and Logroño (50 min) are alternatives if Arnedo is full
Recommended gear for the Isasa Trail Xtrem
MaterialSpring race through the Riojan mountains. Varied terrain with trails, tracks, and ravines. March weather can be changeable.
Salomon
Salomon Speedcross 6
La zapatilla de trail más versátil de Salomon, ideal para terrenos técnicos y barro. Agarre excepcional con suela Contagrip y amortiguación EnergyCell+.
Salomon
Salomon Bonatti WP
Chaqueta cortavientos impermeable ultraligera (135 g). Costuras selladas, capucha ajustable y ventilación trasera. Se pliega en su propio bolsillo.
Petzl
Petzl Actik Core
Frontal recargable de 600 lúmenes con batería Core incluida. Compatible con pilas AAA. Modo rojo para preservar la visión nocturna. Ideal para ultras con tramos nocturnos.
Tips
- • Trail shoes with good grip: terrain mixes technical trails and tracks
- • Light rain jacket in case March weather turns
- • For the Marathon, bring a headlamp: start is at 8:00 but the slowest may finish at dusk
- • Trekking poles recommended for the Marathon's 2,600m elevation gain
Nutrition plan for the Isasa Trail Xtrem
NutriciónWell-distributed aid stations across all three distances with liquids and solids. The Marathon has 11 aid stations.
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.
Gourmet Latino
Bocadillo de Guayaba Gourmet Latino
Bocadillo de guayaba natural en formato individual de 26 g. Alto contenido en vitamina C y carbohidratos de rápida absorción. Textura sólida y envoltorio fácil de abrir, ideal para llevar en carrera. Sabor dulce intenso que aporta energía inmediata sin necesidad de agua.
Tips
- • The Marathon has aid stations every 3-4 km on average
- • Carry your own gels and bars as backup for longer distances
- • Stay hydrated even though March weather is cool
How to get to Arnedo
TransporteArnedo is well connected via the AP-68 motorway from Logroño and Zaragoza.
Browse all transporteTips
- • From Logroño: 50 min via the AP-68
- • From Zaragoza: 1h 30min via the AP-68
- • From Madrid: 3h 30min via the A-2 and N-232
- • From Bilbao: 2h via the AP-68
Car rental in La Rioja
Alquiler de vehículoA car lets you explore the wine region and mountain ranges before and after the race.
DRIVALIA
DRIVALIA Alquiler de vehículos por Suscripción CarCloud Country Plus
Suscripción de alquiler de vehículos tipo SUV/crossover, ideal para llegar a carreras de montaña por carreteras rurales y pistas forestales.
DRIVALIA
DRIVALIA Alquiler de vehículos por Suscripción CarCloud City
Suscripción de alquiler de vehículos urbanos, perfecta para desplazarte a carreras con buenos accesos por autovía y carretera convencional.
Tips
- • La Rioja is compact: everything is within 1 hour by car
Sports insurance for the Isasa Trail Xtrem
SeguroValid sports insurance is required to participate. A federation license or day insurance covers the requirement.
Browse all seguroTips
- • Valid insurance is required on race day
- • If you don't have a federation license, you can get day insurance
- • Mountain rescue coverage recommended for the Marathon
Body care for the Isasa Trail Xtrem
Cuidado corporalSpring race with mild weather but possible wind on ridgelines.
Browse all cuidado corporal
Tips
- • Apply anti-chafe cream, especially for the Marathon
- • A light buff protects from wind on the ridges
Sun protection for the Isasa Trail Xtrem
Protección solarIn March UV radiation is already significant, especially during midday hours.
ISDIN
ISDIN Fotoprotector Fusion Water SPF 50+
Protector solar facial ultraligero de fase acuosa con SPF 50+. Textura fluida que se absorbe al instante sin dejar residuo graso, ideal para aplicar durante la carrera. Resistente al agua y al sudor.
Sun Bum
Sun Bum Sunscreen Lip Balm SPF 30
Bálsamo labial con protección solar SPF 30 en formato stick. Hidrata y protege los labios de quemaduras solares, un punto que muchos corredores olvidan. Sabor a coco, sin parabenos.
Tips
- • Sweat-resistant sunscreen, essential for longer distances
- • Protect your lips with SPF balm
Frequently Asked Questions
- When is the Isasa Trail Xtrem 2026?
- The III Atom Isasa Trail Xtrem takes place on March 7-8, 2026, with the races on Sunday March 8. Bib collection and briefing are on Saturday March 7.
- What distances does the Isasa Trail Xtrem offer?
- Three trail running distances: Marathon 46K (2,600m elevation gain), Half Marathon 23K (1,000m elevation gain), and Short Race 16K (350m elevation gain). There is also a 16K Nordic Walking event.
- Is it suitable for beginners?
- The 16K Short Race with 350m elevation gain is accessible for runners new to trail. The Half Marathon requires mountain running experience, and the Marathon is for advanced runners.
- How do I get to Arnedo?
- Arnedo is 50 minutes from Logroño via the AP-68 and 1h 30min from Zaragoza. The nearest airports are Logroño-Agoncillo (RJL) and Zaragoza (ZAZ).
- How much does registration cost?
- Prices are €50 for the Marathon, €30 for the Half Marathon, and €20 for the Short Race. The first 150 Marathon registrants receive Biontech insoles worth €30.
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