Situated deep in the heart of the Black Mountains in South Wales awaits a mountain range that will take your breath away in more ways than one. Steeped in history from the Bronze age, the Glanusk Estate plays host to one of our toughest aptitude challenges – The Special Forces Race Series

Indicative of its name, this is no ordinary set of events. Hosted and staffed by former UK Special Forces, these route marches have been designed to test individuals both physically and indeed mentally. It also offers a backdrop of such beauty and tranquility which we’re sure everyone who takes part will agree. Most routes venture over the very aptly named dragon’s back (Y Cryb).

All routes are fully marshalled so there is no requirement for navigation. Choose from the following events:

  • Original SF10 RACE
  • DOUBLE RUNNER (Sat & Sun SF10)
  • DUSKBLAZER (Evening Route)
  • SF TRIOLOGY (SF10 Sat & Sun and Duskblazer)
  • SF45 ULTRA (45km)
  • SF3 (3 miles) (8-15yrs) (Must be accompanied by an adult)

All apart from the SF3 can be undertaken with the following categories:

  • Loadbearing (35lbs)
  • Clean Fatigue
  • SF Loadbearing (45lbs) and Mock Weapon
  • Masters Loadbearing (25lbs)
  • Masters Clean Fatigue

All weight requirements for Loadbearing categories are excluding food and water to be consumed on the day. Those eligible for Masters Loadbearing are able to enter any Loadbearing category but to enter Masters you must be aged 50+. All finishers will be awarded a custom TSFE SF Race Series medal and certificate of completion. Prizes will be awarded to all winners from each category.

The venue will be hosting various activities throughout the weekend within the registraiton area. There’ll be something for everyone so why not bring the family along or some friends. There’ll be an admittance fee of £10 for adults and £5 for children. Once there they can relax in the large open field whilst enjoying some hot food and drink or take part in any one of our static activities.

Forthcoming Events


Mountain Page Break

Where Is It?

Black Mountains, South Wales


Detailed directions will be given within your joining instructions that you will recieve when registering.

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“Awesome!!! Tough Mudders, Spartan races do not come close. Nothing compares to the fan dance”

Dave, England

“Brilliant! Great that all the guys with the heavy stuff were so cheerful and shouting good luck”

Sally, North Wales

“Amazing. Very well organised with DS who obviously are committed to giving the runners the best experience possible. Well done. See you next year.”

Lee, Scotland