Desafío Ultra El Cainejo

Saturday, 23 May 2026

Desafío Ultra 52K

52km D+ 5500m

Cainejo 35K

35.7km D+ 3200m

Cainejín 19K

19.5km D+ 1800m

Desafío Ultra El Cainejo 2026: Registration

Desafío Ultra El Cainejo is one of Spain's most technical and demanding trail races. Held in Caín de Valdeón (León), in the heart of Picos de Europa National Park, it offers three distances — 52K, 35K and 19K — along ancient shepherd paths through limestone channels, exposed sections with ropes and chains, and brutal elevation gains across the most vertical massifs of the Cantabrian Mountains.

Registration closed

Registration opens: 5 December 2025

Registration closes: 18 May 2026

Registration closed

Visit official website ↗

Entry fees by distance

Distance	Elevation	Price	Time limit
Desafío Ultra 52K52K	5,500m D+	104 EUR	16h	Closed
Cainejo 35K35.7K	3,200m D+	72 EUR	12h	Closed
Cainejín 19K19.5K	1,800m D+	53 EUR	6h	Closed

Registration timeline

Registration opens

5 Dec

→

Registration closes

18 May

How to register

1
Go to the official race website using the registration button.
2
Select the distance you want to run.
3
Fill in the form with your personal details and federation license (if required).
4
Complete the payment and save your registration confirmation.

What's included in your entry?

Race bib with timing chip, aid stations along the course, accident insurance during the race, access to finish line services (physiotherapy, showers, finisher meal) and an event t-shirt or memento.

Registration closed

The registration period for this edition has ended. Check the official website in case there's a waitlist or last-minute spots.

Visit official website ↗

See full Pack 360 guide