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The best parts of our favourite sessions, compiled into one experience day.

Experience the ultimate "Training Day" with us!


We've trained sports teams, gyms, military, and even the Welsh rugby teams......


Now, we've compiled the best parts of our favourite sessions into one incredible experience for everyone to enjoy.  With a mix of classic and innovative training sessions, this is undoubtedly the biggest bang for your buck you'll find!


Ideal for individuals, friends or groups.

Gym-goers, runners, sports players, and fitness enthusiasts alike - from average Joe to elite athlete. Our Training Day welcomes everyone seeking to try something new and unique.

We pride ourselves on providing a fresh perspective on Training, Health and well-being.


With our 110-acre facility and unique approach, this is undoubtedly the biggest bang for your buck you'll find!

If you're seeking to elevate yourself physically, mentally, and emotionally, The Green Mile Open Day is the place to.








The Green Mile Open Day is a mix of our favourite sessions and events in one big experience day.


Wim Hof Experience

O2 Advantage Programme

Calisthenics class

Trail Runs

Mini Events

Skills Classes


Mobility Sessions

& More...

Our itinerary is flexible and caters to all abilities. If a session doesn't interest you, no worries! There are plenty of other activities to enjoy, or simply sit back and spectate.

Join us for our innovative monthly Open where everyone gets an exclusive chance to immerse themselves in the very best elements of our highly acclaimed sessions.


Over the past three years, we've trained sports teams, gyms, the military, and even the renowned Welsh rugby teams, cultivating a wealth of expertise that we're excited to share with you.


Our new 'Oxygen Advantage program' - A breathing technique-based training system designed to optimise breathing efficiency and enhance overall performance in training and life.

Developed by the renowned Patrick McKeown, Our signature Oxygen Advantage program, which we've adapted and refined alongside the Welsh rugby teams, takes centre stage as one of our key highlights.

The techniques we teach can provide several benefits to your fitness and overall health. Here are six potential benefits:

  1. Improved endurance: By optimising your breathing patterns, you can increase the efficiency of oxygen delivery to your muscles during exercise. This can help improve your endurance and allow you to work out for longer periods of time.

  2. Increased energy levels: By improving oxygen uptake and reducing the strain on your respiratory system, you may find that you have more energy throughout the day, even outside of exercise.

  3. Better recovery: By reducing stress on your respiratory system and improving oxygen delivery to your tissues, you may experience faster recovery after exercise, reducing muscle soreness and fatigue.

  4. Improved mental focus: Breathing techniques can help calm the mind and improve focus, which can be beneficial for athletes and non-athletes alike.

  5. Reduced risk of injury: By improving your breathing patterns and optimising oxygen delivery to your tissues, you may be able to reduce your risk of injury during exercise.

  6. Reduced stress and anxiety: The breathing techniques used in the Oxygen Advantage program can help activate the parasympathetic nervous system, which can reduce stress and anxiety and promote relaxation.

Acres schools, universities health and w

“This is just one of the many training sessions on the Open Day, our jam-packed introduction into The Oxygen Advantage programme. Not only will you learn the theory, but we’ll apply these new found techniques into the remaining sessions on the day. This experience will provide you with a bulk of knowledge to continue developing these skills and benefits at home, training and in life.” - Chris Flynn - Co-Founder & Qualified Oxygen Advantage Instructor


Our itinerary is flexible and caters to all abilities. If a session doesn't interest you, no worries! There are plenty of other activities to enjoy, or simply sit back and watch.


  • 8am - 6pm

  • All sessions and classes are instructor lead

  • Trail Runs and any events are scaled for all abilities

  • Healthy Snacks, fruits, bars, and drinks are included through-out the day

  • Fire & Feast - Evening BBQ & drinks included


only £75 

(Normally £95)

*Discount also available for groups.

Please contact us


Fri 7th Jul 23

Fully booked

Sat 22nd  Jul 23

Fully booked

Sat 5th Aug 23

Fully booked

Fri 18th Aug 23

Fully booked

Fri 20th Oct 23


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"We have designed the Open Day using the best parts of all our favourite sessions and events to date….The best experience in town! Join a community of like-minded individuals and embrace the camaraderie as you engage in the Green Mile Open. Immerse yourself in a day of transformative experiences, new training methodologies, and invaluable insights from our accomplished coaches and partners.”

Craig McCormack - Co-founder 

    All Skill sessions, Challenges, Wim Hof, and Studio sessions are suitable for all fitness levels and abilities. However, the Trail Runs and some other sessions when needed will be split and scaled based on fitness levels. We do recommend a general minimum fitness level of being able to run 5k in 33 minutes or less, and easily complete the standard UK gym circuits class. We cater to all levels of fitness, from this recommended minimum level to the most advanced.
    Bring a day sack with your regular training items, such as a water bottle, 2x towels, and x2 spare kit. We highly recommend trail running shoes, but if not no worries You will receive a more detailed kit list by email in plenty of time before the day.
    Healthy snacks, fruit, bars, hot and cold drinks are provided throughout the day. Please bring your own Lunch (whatever works best for your training) The evening FIRE & FEAST BBQ at Basecamp is also included.
    Cancellation Policy for The Green Mile Open: * If you cancel before 7 days of your booking, we can provide a full refund or reschedule your booking to the next available date. * If you cancel within 7 days before your booking, we are unable to offer a refund, but we can still reschedule your booking to the next available date.
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