Situated deep in the heart of the Black Mountains in South Wales awaits a route 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 10 (SF10)

Indicative of its name, this is a 10 mile route, 5 miles out and back which climbs the very apt dragon’s back (Y Cryb). This route has been carefully selected by the DS as it will challenge the most hardy of tabbers and fell runners alike.

The route is fully marshalled so there is no requirement for navigation. Choose from the following categories:

  • SF45 (45lb & Mock Weapon) – £45
  • Loadbearing (35lb) – £40
  • Masters Loadbearing (25lb) – £40
  • Clean Fatigue (no weight requirement) – £35
  • Masters Clean Fatigue (no weight requirement) – £35

Team tickets available for all categories. Benefit from 10% off your ticket price. Teams must be between 4 and 10 people. You must all be within the same weight category, Clean Fatigue, Loadbeaing or SF45 (can include a mixture of Standard and Masters within Clean Fatigue and Loadbearing).

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 SF10 medal and certificate of completion. Prizes will be awarded to all winners from each category.

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