Trail races in Castile and Leon — May 2026
Castile and Leon hosts Sierra de Gredos, Sierra de Guadarrama, and part of Picos de Europa. Ultrail La Covatilla and Trail Gredos are benchmark events in the northern plateau.
2 races scheduled
Climate in Castile and Leon: The continental climate imposes extreme conditions. Winters are harsh, with abundant snow in the ranges until May, while July and August bring stifling heat on the plateau and storms at high altitude. Spring and autumn offer the best windows: mild temperatures, accessible peaks, and landscapes in full transformation. Mornings can be freezing even in June, so always go prepared.
Race summary
2
Races
5 – 52 km
Distance range
1,000 – 5,500 D+
Elevation range
May
Race months
Difficulty
Tips for running in Castile and Leon in may
Sun protection: the sun is already strong in May. SPF 50+ cream, visor cap and sunglasses are essential.
If your race is in high mountains, still bring thermal layers: at high altitudes temperatures can drop below 5 °C.
May has a high volume of races: plan carefully if you have multiple objectives to avoid overtraining.
Race map
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Scheduled races
Photo: Desafío Ultra El CainejoDesafío Ultra El Cainejo
Caín de Valdeón, León
52K, 35K y 19K por los Picos de Europa desde Caín de Valdeón — una de las carreras más técnicas de España
100KElite
Neveros Vertical
Ágreda, Soria
Neveros Vertical — 5K con 1.000 m D+ en el Moncayo, Soria
Gear up for the mountains
The right gear makes the difference on race day. Our comparison guides to choose well.
Essential trail running gear
Must-have gear to prepare for your mountain races
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.
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.
Icebreaker
Icebreaker Merino 200 Oasis LS Crewe
Long-sleeve thermal top in 100% merino wool (200g). Natural temperature regulation, genuine multi-day odor resistance and a soft, non-itch handfeel from the fine merino yarn.
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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