Trail Races in May in Spain 2026
May is one of the peak months for trail running in Spain. The calendar is packed with top-level events and conditions are unbeatable across most of the territory. Temperatures allow comfortable running even at long distances, the mountains are green and the days are long — a key factor for ultras that extend into the night. Many UTMB-qualifying events cluster in this part of the year. May is also when high mountain opens up: the Pyrenees and other ranges allow routes that are inaccessible in winter. It is the time to capitalise on peak season fitness.
23
Races
4 – 185 km
Distance range
0 – 5500 D+
Elevation range
May
Race months
Difficulty
Tips
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
Click a marker to see race details
Race calendar
Mayo2026
Trail Menorca Camí de Cavalls
Ciutadella de Menorca · Balearic Islands
CxM Trabuco Trail
Villanueva del Trabuco · Andalusia
X CxM Sierro
Sierro · Andalusia
Xtreme Higa de Monreal
Monreal · Navarre
101 Kilometres in 24 Hours - La Legión
Ronda, Málaga · Andalusia
Transvulcania
Los Llanos de Aridane, La Palma · Canary Islands
V Trail Nieva de Cameros
Nieva de Cameros · La Rioja
Berroeta Mendi Maratoi Erdia
Berroeta · Navarre
Trail Vila de Cuntis
Cuntis, Pontevedra · Galicia
Cross de la Pedriza
Manzanares el Real · Community of Madrid
La Osera
Paterna del Madera, Albacete · Castile-La Mancha
Haritzen Mendi Lasterketa
Unzué · Navarre
Desafío Ultra El Cainejo
Caín de Valdeón, León · Castile and Leon
RunThrough Ultra Trail Girona
Girona · Catalonia
Spain Backyard Ultra
Castro Caldelas, Ourense · Galicia
Rebecos Trail
Egüés · Navarre
Zegama-Aizkorri
Zegama · Basque Country
Ultra Trail Bosques del Sur
Cazorla · Andalusia
Neveros Vertical
Ágreda, Soria · Castile and Leon
Mitxarro Bira
Araia · Basque Country
XVII CxM Carrera Pencona
Aldeanueva de la Vera, Cáceres · Extremadura
Cross de Cuerda Larga
Miraflores de la Sierra · Community of Madrid
Lakuntza-Aralar Mendi Lasterketa
Lakuntza · Navarre
23 races
Photo: Trail Menorca Camí de CavallsTrail Menorca Camí de Cavalls
Ciutadella de Menorca
From 11K to 185K along the Camí de Cavalls — the full circumnavigation of Menorca on its most legendary coastal trail
Photo: Andalucía RunningCxM Trabuco Trail
Villanueva del Trabuco
23.5K with 1,500m D+ through the Sierra de San Jorge from Villanueva del Trabuco
Photo: Club Etón Sport / FADMESX CxM Sierro
Sierro
24K and 1,100m D+ through the Sierra de los Filabres · Andalusian Cup and MiniCxM Championship
Xtreme Higa de Monreal
Monreal
Two distances up the Higa de Monreal: 21K and 12K on the giant of the Pamplona Basin
Photo: Cruzando la Meta101 Kilometres in 24 Hours - La Legión
Ronda, Málaga
101K through the Serranía de Ronda with 2,819 m D+ in 24 hours
FeaturedPhoto: TransvulcaniaTransvulcania
Los Llanos de Aridane, La Palma
73K, 43K, 25K, and VK crossing La Palma along the Ruta del Bastón
V Trail Nieva de Cameros
Nieva de Cameros
V Trail Nieva de Cameros — 47K, 23K and 13.5K through Camero Nuevo, La Rioja
Photo: Berroetako Mendi ElkarteaBerroeta Mendi Maratoi Erdia
Berroeta
21.6K, 15K and 10K through the Baztan Valley mountains with Saioa summit as the high point
Photo: Trail Vila de CuntisTrail Vila de Cuntis
Cuntis, Pontevedra
XII Trail Vila de Cuntis — Three trail distances (21K, 15K, 10K) through the mountains of the thermal spa town of Cuntis, Pontevedra
Cross de la Pedriza
Manzanares el Real
Legendary race through La Pedriza: 25 km and 1,600 m D+ across the most spectacular granite landscape of the Sierra de Guadarrama, scoring for the Copa de Hierro
La Osera
Paterna del Madera, Albacete
6th La Osera — 45K / 25K / 12K through the Sierra del Segura and Sierra de Alcaraz in Paterna del Madera, Albacete
Haritzen Mendi Lasterketa
Unzué
2nd edition of the Haritzen Mendi Lasterketa in Unzué: 24 km and 11 km through the Alaitz range, part of the 2026 Navarra Cup
Photo: Desafío Ultra El CainejoDesafío Ultra El Cainejo
Caín de Valdeón, León
52K, 35K and 19K through Picos de Europa from Caín de Valdeón — one of Spain's most technical trail races
100KEliteRunThrough Ultra Trail Girona
Girona
103K, 50K, and 26K through Les Gavarres Natural Park from Girona
Photo: Spain Backyard UltraSpain Backyard Ultra
Castro Caldelas, Ourense
Spain's official backyard ultra — 6.7 km loops with 240 m D+ in Castro Caldelas, Ribeira Sacra
Rebecos Trail
Egüés
3rd Rebecos Trail — Two distances through the Sierra de Aranguren from Egüés: 18.6K and 11.3K
FeaturedPhoto: Zegama-AizkorriZegama-Aizkorri
Zegama
42K and VK through the Aizkorri range — the most legendary skyrunning race in Spain
Photo: Ultra Trail Bosques del SurUltra Trail Bosques del Sur
Cazorla
70K, 42K, 21K, 10K and 4K through the Cazorla, Segura y las Villas Natural Park
Neveros Vertical
Ágreda, Soria
Neveros Vertical — 5K with 1,000m D+ on Moncayo, Soria
Photo: Mitxarro BiraMitxarro Bira
Araia
27.5K and 14K through the Sierra de Altzania in the Aizkorri-Aratz Natural Park
XVII CxM Carrera Pencona
Aldeanueva de la Vera, Cáceres
XVII CxM Carrera Pencona — Mountain trail (21K, 11K) through the Sierra de Gredos from Aldeanueva de la Vera, Cáceres
Cross de Cuerda Larga
Miraflores de la Sierra
Classic Sierra de Guadarrama traverse: 26 km and 1,500 m D+ along the Cuerda Larga ridge between Morcuera and Navacerrada, with summits above 2,000 m
Lakuntza-Aralar Mendi Lasterketa
Lakuntza
21st Lakuntza-Aralar — Mountain race through the Aralar Natural Park: 26K and 13K from Lakuntza