By using this website you agree to our

Immortal Triple Crown – Stourhead

Event details


IconSuggest an edit

See any improvements? Be the first to make this page better.

Take up the challenge in this gruelling half iron man. This event will test even the most experienced triathletes. Come if you want to compete on a tough but rewarding course and achieve those well-earned bragging rights.

Review summary

6 Reviews
  • Course
  • Organisation
  • Atmosphere


Wheel_ M
"A well organised event let down a little by the bike course. Although pretty,..."


Mark M
"A brilliant day, clear routes, well supported, and a gorgeous setting. A..."


Katie R
"Great venue, very well organised and fantastic Marshalls. Its a tough course..."
See all reviews

How to enter the Immortal Triple Crown – Stourhead

  1. Half Ironman

    Triathlon: Swim 1.9km, Bike 90km, Run 22.5km
    Event passed
  2. Mega Sprint

    Triathlon: Swim 0.56mi, Bike 18mi, Run 4.5mi
    Event passed
  3. 10K

    Run 10km
    Event passed
  4. Triple Crown

    Triathlon: Swim 2.8km, Bike 74km, Run 24.7km
    Event passed

Immortal Triple Crown – Stourhead routes

Only the most hardened athletes will endeavour to complete all 3 elements over the weekend 10K, Mega Sprint and Middle Distance to secure a place in the Triple Crown Hall of Fame.

On completion of all three events, you’ll be inducted into the Triple Crown Hall of Fame and will receive a very special finisher’s memento.

Half -

This tough and challenging race will start off with a 1900m, two laps swim in the beautiful and scenic lake, followed by a 56-mile ride, which is stunning, yet fast and tough in equal measures. The route unusually visits the three counties of Wiltshire, Somerset and Dorset. The run route then follows a footpath through a meadow, before a section of tarmac to the far west end of the lap. From here the route passes through the woods to the west of Stourhead, on a lively descent. You will be again wowed by the views. Three laps take you past the stunning Estate House, where you are sure to be cheered on by friends and family. The finish line at the House at the end of lap three will bring with it, the accolade of becoming an Immortal Triathlete.

10K -

Around 50% of the route is on really quiet closed country lanes, with the remainder on forest tracks and trails. With a total of 770ft/235m of climbing

Running through Stourton village, then past the Lakes before taking a right turn crossing a dam before starting the run for the trees. In early May the flora and fauna is guaranteed spectacular, and the sights and smells will distract you from the shift you are putting in!

The loop through the forest takes in some beautiful clearings and pasture before returning to the Dam which supports the lake, under the Stone Arch before returning through the village and onto the driveway to receive the respect and applause from the gathered spectators and families.

Mega Sprint -

This tough and challenging race will start off with a 900m swim in the large lake, followed a by a beautiful and fast 18-mile ride through the Wiltshire, Somerset and Dorset counties, before finishing in a 4.5-mile run!

Event Details

  • Finisher medals
  • Prizes for the top 3 for both men and women.
  • Results available online
  • An Immortal Hoody on registration
  • VIP Transition Area
  • Sports Therapy Massage on the Saturday
  • Food and Drink Vouchers
  • A behind-the-scenes tour with one of the team
  • Schedule:

    Saturday 11/5:

    10:00 am - Stourton 10k

    5:00 pm: Stourton Megasprint

    All parking will be on the nearby Airfield and will be clearly signposted from the High Street at Stourhead. All athletes and spectators must enter through the Visitor Centre.

    Registration will be open from 12pm till 4pm on Saturday 11th May and from 5:30am till 6:30am on Sunday 12th May by prior arrangement. This will take place in the Discovery Centre and follow signs from Visitor Centre.

    Please ensure you have all necessary kit, comfortable clothing and equipment for the run, bike and swim before you arrive.

    All parking will be on the nearby Airfield and will be clearly signposted from the High Street at Stourhead. All spectators must also enter through the Visitor Centre.

    All aspects of the race have some great viewing opportunities. There are superb viewing opportunities around the lake for the swim and the transition is near the finish line, which is outside Stourhead House and once again a good viewing spot.

    Volunteers are needed throughout the race week, not just on race day, to support the event build up, registration, the athlete functions and a wide variety of support on race day. You can indicate a preference for your area of choice and we will do all our best to accommodate your preferences.
    Head over to the Taunton Triathlon site to volunteer!

      Aid Stations
      Athlete Village
      Build Up
      Swim Course
      Bike Course
      Run Course
      Transition Area with bike check-in

    All finishers will receive a Finisher's T-shirt and truly memorable medal.

    Registration will be open from 12:00hrs till 16:00hrs on Saturday 11th May and from 05:30hrs till 06:30hrs on Sunday 12th May

    Meet the organiser

    Are you the organizer? Claim this page

    Immortal Sport offer a series of events ranging from 10k runs to challenging Middle Distance Triathlons in stunning locations. Whatever level of athlete you are you will find an Immortal Sport event perfect for you.


    Immortal Triple Crown – Stourhead reviews (6)

    4.6 out of 5 stars

    • Course
    • Organisation
    • Atmosphere
    • Did the Half Ironman in 2019

      Great venue, very well organised and fantastic Marshalls. Its a tough course but some of the views are amazing and the run through the woods is stunning.
    • Did the Half Ironman in 2019

      A brilliant day, clear routes, well supported, and a gorgeous setting. A fantastic place to do a half ironman.Details: running route half shade / half open was excellent, and a 'left turn only' cycle route made that safer and easier. Good planning. What would I do differently? Advise the water temperature before (if you did, I missed it), have registration for an hour the evening before (say 8-9?), if need be in a local pub for the sanity of your team, a few more loos, and food stalls with more food - they ran out early because they couldn't keep enough food on site for 2 days, but I thought they were really good providers, so don't change them! (that's why they ran out...)
    • Did the Half Ironman in 2019

      A hard course, so good for a challenge. Cycle and run courses very good. Marshals excellent - friendly, helpful and encouraging. Better signage to the car park would be good.
    • Did the Half Ironman in 2019

      Amazing experience. I didnt enjoy the mass start swim (dont enjoy swimming that much) but other than that a fantastic event with plenty of support and info to help you around
    • Did the Half Ironman in 2019

      fab. suggest having more nutrition/ gels available for the early runners - it was the third lap before an energy drink was available. amazing day, thanks
    • Did the Half Ironman in 2017

      A well organised event let down a little by the bike course. Although pretty, the road surface wasn't the best and there were two sets of roadworks that year (2107). The feed station (on the bike) was not ideal. The route was changed last minute for 2018 so 2019 could all be different. Great location and support as always though.
    IconSomething missing?

    We're rebuilding our event pages and would love your input. Please suggest anything you would like to see on this page.

    Get race results and photos

    This event has passed. Congratulations to all the participants. Get race results and photos.