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Saturday, December 19, 2026 – Sunday, December 20, 2026
Trail Trincheras XYZ is a trail race in Jérica (Castellón), in the Alto Palancia, that follows the trenches of the XYZ line, a Spanish Civil War defence now taken back by the pine forest, with views of the Sierra de Espadán, La Calderona and Penyagolosa. The Z is 28 km (+1,228 m), the Y 19 km (+834 m), the W 18 km and the X 12 km (+616 m), a fast one for a first trail; the Y, Z and W are in the UTMB Index. On the Saturday the Trinchera Vertical climbs 385 m in 4.8 km to the Alto de Sayas, and the Combinada adds it to the Y. It is organised by the Club Deportivo Chafaaliagas and the town council.
Pick your distance to see how long to train, how to fuel and the gear that suits this course.
12 weeks of specific training
Build up to 3-hour long runs with climbing and practise running downhill.
Add two short strength sessions a week (legs, hips and core): they protect you on the descents.
See the week-by-week training planTake 30–60 g of carbs per hour from the first hour and drink to thirst with electrolytes.
Runnable course: train on similar trails and practise holding a steady pace on the climbs.
Picked for this course and distance from the products we compare.
Your pace leg by leg, the food where you'll need it and a wristband to print, on this race's profile.
Example · 25 km trail with two aid stations
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Trail Trincheras XYZ 2026 takes place in Jérica, Alto Palancia, Castellón, Spain: December 19 – 20, 2026. Add it to your calendar from the top of this page so you don’t miss it.
Trail Trincheras XYZ takes place in Jérica, Alto Palancia, Castellón, Spain. There are 8 other trail races within 250 km, shown on the map, if you want to combine them in one trip.
Trail Trincheras XYZ has 4 distances: 12K, 18K, 19K, and 28K. The longest is the 28K.
No: Trail Trincheras XYZ is an independent race, not part of a circuit such as the UTMB World Series or the Golden Trail Series.
For the 28K, plan around 12 weeks of specific training if you already run regularly. For the 12K, about 8 weeks are enough. Build up long runs with climbing and add two short strength sessions a week.
It is not tagged as a technical race in our data, so check the course profile on the official website and train on trails with climbing like the race’s.
For its terrain, choose shoes with good grip. Good options: Salomon Ultra Glide 4, Hoka Challenger 8, and NNormal Kjerag 2. You will find them, and the rest of the gear, in “How to prepare” below.
Registration is on the official website (trailtrincherasxyz.es). Popular races sell out, so check the dates early, and mark it as “I want to register” at the top of this page to keep it in your races.
Look for accommodation in or near Jérica. The accommodation map on this page shows hotels and apartments around the race, with prices for your dates.
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