As spring transitions into early summer, trail runners around the world gear up for some of the most scenic and challenging races on the global calendar. From the rugged peaks of Europe to the lush trails of Asia and the vast backcountry of North America, May offers a diverse lineup of events that test endurance, celebrate nature, and unite the trail running community.
In this article, we highlight some of the most exciting trail races happening worldwide in May 2025—perfect for those planning their next race or simply seeking inspiration from the global trail scene.

Amazean Jungle Thailand by UTMB
Date: May 1, 2025
Location: Betong, Thailand
Distances: 109 km, 85 km, 50 km, 23 km, 17 km  

● Website: AMAZEAN JUNGLE THAILAND BY UTMB

Haut Atlas Trail Morocco (Ouirgane Trail)
Date: May 1, 2025
Location: Ouirgane, Morocco
Distances: 120 km, 80 km, 63 km, 44 km, 20 km, 8 km, 4 km

● Website:https://hautmorocco.com/

 Trail Menorca Camí de Cavalls
Date: May 3, 2025
Location: Menorca, Spain
Distances: 185 km, 100 km, 85 km, 58 km, 44 km, 27 km, 11 km

● Website: https://trailmenorca.es/

Ardèche Trail La Voie Romaine
Date: May 3, 2025
Location: Désaignes, France
Distances: 57 km, 36 km, 20 km, 12 km, 8 km

● Website: Ardèche Trail la Voie Romaine (07) - 2 et 3 Mai 2025

The Cabo Verde Treg
Date: May 6, 2025
Location: Mindelo (São Vicente Municipality, Cabo Verde)
Distances: 40 km, 80 km, 120 km

● Website: https://www.le-treg.com/caboverde-accueil-en

ULTRA TRAIL DES GEANTS 2025
Date: May 8, 2025
Location: Saint-Philippe, France
Distances: 224 km, 174 km, 128 km, 82 km, 44 km, 37 km

● Website: Ultra Trail des Géants 2025 (Saint-Philippe) | Île de la Réunion Tourisme

BTR Ultra 2025
Date: May 9, 2025
Location:  Bangli, Indonesia
Distances: 100 km, 60 km, 30km, 15 km,  7km ● Website: BTR Ultra 2025 - Bali Trail Ultra organized by Bali Trail Running

Ferriere Trail Festival 2025
Date: May 9, 2025
Location: FERRIERE, Italy
Distances: 102 km, 57 km, 31 km, 20 km● Website: https://ferrieretrailfestival.it/

DrewHome Beskidzki Topor 2025
Date: May 10, 2025
Location: Andrychow, Poland
Distances: 104 km, 73 km, 43 km, 25 km● Website: https://beskidzkitopor.pl/

FunTrails Round Minano 2025
Date: May 11, 2025
Location: Minano, Japan
Distances: 53 km, 30km ● Website: 第4回FunTrails Round みなの50K/30K

Trail Alsace Grand Est by UTMB
Date: May 15, 2025
Location: Grand Est, France
Distances: 158 km, 116 km, 17 km ● Website: Trail Alsace Grand Est by UTMB

HOKA Ultra-Trail Australia by UTMB
Date: May 15, 2025
Location: Katoomba & Blackheath, Australia
Distances: 161.5 km, 100.8 km, 22 km, 12.6 km●Website: Ultra-Trail Australia by UTMB

Ultra-Trail Snowdonia by UTMB
Date: May 16, 2025
Location: Llanberis, United Kingdom
Distances: 164 km, 104 km ● Website:Ultra-Trail Snowdonia by UTMB

Ultra-Trail Great Wall by UTMB
Date: May 16, 2025
Location: Dajingmen, China
Distances: 103.5 km

● Website: Ultra-Trail Great Wall by UTMB®

Rinjani 100 2025
Date: May 16, 2025
Location: Belanting , Sembalun-Lombok, Indonesia
Distances: 162 km

● Website: F-One Sport - Rinjani100

West Macs Monster 2025
Date: May 16, 2025
Location: Alice Springs, Australia
Distances: 231 km

● Website: https://westmacsmonster.com.au/

Highball to Thurmond 50M and 50K
Date: May 18,  2025
Location: Hwy 25 & Hwy 2 Thurmond WV, United Stated
Distances: 50 km, 50mile

● Website: Highball to Thurmond Ultra & Relay

NUTS Karhunkierros 
Date: May 23, 2025 
Location: Ruka Ski Village Finland
Distances: 100 km, 80 km, 55 km, 34 km●Website: NUTS Karhunkierros -polkujuoksu – Haasta Kuusamon kevät! Polkujuoksu 13, 34, 55, 83 ja 166 kilometriä.

Transylvania 100K
Date: May 24, 2025
Location: Strada General Traian Moșoiu, Romania
Distances: 100 km, 80 km, 50 km, 30 km, 20km

●Website: Transylvania 100 | Home

HOLYTRAIL
Date: May 29,  2025
Location: Dr.-Ludwig-Leber-Straße Austria
Distances:  70km, 20km

● Website: HOLYTRAIL

Hochkoenigman Trail Running
Date: May 30,  2025
Location: Saalfelden Austria
Distances:  85km, 46km, 30km, 25km, 10km

● Website: 10. Hochkönigman Trailrunningfestival

As the trail season gains momentum, May’s races showcase the spirit of adventure, resilience, and global community that defines trail running. Whether you're toeing the start line or cheering from afar, these events offer more than just competition—they celebrate a shared passion for pushing boundaries in the wild. Stay inspired, stay prepared, and may your own trail journey be as rewarding as the summits ahead.