The Event

Swim, cycle and run 1,055km from Loch Ness to London over seven days in the UK’s ultimate supported multi-sport challenge.

Take onBritain

Monster Triathlon returns in between 6-12 June 2027 for an unforgettable seven-day journey from Loch Ness to London.

Begin with a 5km swim in Loch Ness, cycle across Britain over five days and complete the challenge with a 50km ultramarathon into London.

This is far more than a traditional triathlon. Accommodation, meals, luggage transfers, feed stops, medical support and mechanical support are handled throughout the week, allowing you to focus on the challenge and the journey ahead.

Your entry also includes six nights’ twin-share accommodation, with three nights in luxurious four-star spa hotels to help you recover and recharge between stages.

Every participant also receives a GPS tracker and Monster jersey, helping create a safe and shared experience from Loch Ness to London.

Places are limited for this unique supported endurance challenge.

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The RouteSwim.Cycle.Run

Day 15km swim in Loch Ness (Cycle to Fort William)

Starting on the shores of the fabled Loch Ness, home to a mythical monster, you’ll begin your challenge by braving the waters with a 5km swim before tackling a short ride to Fort William, home of the UK’s tallest mountain, Ben Nevis.

Day 2Cycle from Fort William to Glasgow

Day 2, and the first full day on the bike, will see you tackle both the climbs of the Scottish Highlands, including the iconic Glencoe Pass, and the twisting lanes on the shores of Loch Lomond, before reaching Glasgow and the day’s finish.

Day 3Cycle from Glasgow to Carlisle

Following the rugged landscape, you’ll cut through the Scottish Borders as you head south towards England taking in yet more incredible scenery as you take on the next leg of your challenge.

Day 4Cycle from Carlisle to Haydock

The halfway point in your challenge sees you take on the longest day on the bike as you head over the incredible Shap Pass and through the undulating terrain of the Lancashire countryside.

Day 5Cycle from Haydock to Kidderminster

As your challenge starts to take its toll, you’ll face a fast and flat start to the day, but keep some energy in the bank as you tackle the hills of the West Midlands towards the end of the day’s ride.

Day 6Cycle from Kidderminster to Windsor

Your last day in the saddle sees you tackle another long day, passing through Shakespeare’s country and the beautiful Warwickshire countryside. You’ll battle your final hills of the trip through the Chilterns before descending down into Windsor.

Day 7Run from Windsor to Richmond

The final leg of your journey, and an ultra-marathon to complete as you join an impressive list of Monsters who have taken on the challenge of the UK’s toughest triathlon. Following much of the Thames Path as it winds its way into the capital, you’re within touching distance of your goal and the embrace of your fellow Monster finishers.

Included inthe event

Across all seven days, you can expect a high level of support from the Monster team, including:

  • Twin-share hotel accommodation, including secure bike storage
  • Breakfast, lunch and dinner each day, plus supported snack and feed stops
  • Daily baggage transfers
  • Full medical support
  • Full mechanical support
  • Pre-event information, including GPX files and briefing notes
  • Finisher medal and T-shirt
  • Finish celebration with food and drink
  • Sports physio and massage available at an additional cost
David Lawrie
Lisa Melvin
"Bucket List event! A once in a lifetime opportunity. Just the best experience ever, swimming in Loch Ness with the most dramatic backdrop, jumping onto our bikes for an epic 5 days of cycling through the rolling British countryside topped off with the most beautiful run along the Thames. The Monster Team were truly outstanding from the outset making sure we were all very well looked after and making it a very chilled out event allowing all participants to enjoy the week at a pace to suit them meeting great new friends at the same time.  Highly recommend!! "
Vicky Goodwin
Roman Janda
"Best event of my life so far. If you need a challenge this is the one..."
Aubrey Malcolm Green
Andy Pills
"Thank you for the best week I’ve had in a long long time. Hard at times but a really great team!"
Aubrey Malcolm Green
Jacqui Burke
"Fantastic event. It was hard work, well worth it. Organisers were amazing. View of Scotland and England were stunning. Great to meet loads of new like-minded friends."
Aubrey Malcolm Green
Paul Naylor
"Definite bucket list, must do! Awesome event, well organised and an incredible journey. All the team were first class and couldn't do more to help."