"We sing the praises of the madness of the brave!" © Maxim Gorky
An exceptionally challenging winter ultra-trail marathon that has become a primary goal for thousands of athletes from across the country and dozens of nations worldwide.

The race distances cater to everyone from beginner trail runners to hardcore extreme-sports enthusiasts: K10, K20, K30, K40, a winter trail relay, K70, Mad Fox Ultra 50 miles, and Valhalla Race 100 miles.
Please note that the name of a race distance may differ from its actual length; therefore, please verify the specific mileage for the route.
All race distances for Mad Fox Ultra (Mad Fox Ultra Pure Intention 2026) are set within an open-air museum—a term often used to describe the ancient city of Pereslavl-Zalessky!
With over 300 architectural monuments and ancient temples, abandoned pagan shrines, and historic routes dating back centuries, this is the very land where Alexander Nevsky was born—and where, every December, thousands of athletes push themselves to the limit in an incredibly challenging winter race!
Maximum number of participants: 4,500 athletes.
December 18–20, 2026
Mad Fox Ultra
(Mad Fox Ultra Pure Intention 2026)
About the event
О мероприятии

Seven courses of varying difficulty

Immerse yourself in a festive atmosphere at Mad Fox Ultra Pure Intention

Description of event routes

Dear athletes!

Registration for Mad Fox Ultra (Mad Fox Ultra Pure Intention 2026) is now closed, as the participant limits have been reached!

We look forward to seeing you in Pereslavl-Zalessky in December 2026, dear friends!

For any questions, please contact us at: info@goldenultra.ru

Registration is open

For any questions, please contact us at: info@goldenultra.ru

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INFORMATION

Partners

Partners to whom we are infinitely grateful

CONTACTS

For general inquiries:

info@goldenultra.ru

For media accreditation inquiries:

press@goldenultra.ru

For sponsorship and partnership inquiries:

pr@goldenultra.ru

Contact via Telegram or MAX:

+7-966-083-20-38