Half Ironman Triathlons in UK

Who will be brave enough to challenge for the Triple Crown? 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.

Please note - If you want to participate in 10K, Mega Sprint or Middle/Half Distance separately then please check the links below:

10K race - https://www.letsdothis.com/e/immortal-10k-99954

Mega Sprint - https://www.letsdothis.com/e/immortal-megasprint-66744

Middle/Half Distance - https://www.letsdothis.com/e/immortal-half-stourhead-99946

A strong swim in the tidal Beaulieu River, a road bike leg in the southern area of the New Forest, and a fairly flat and sheltered run on lanes and river footpaths. Relay team option available for the middle distance, plus AquaBike (swim & cycle).

Become Immortal on the 12th May 2019.

The Immortal Middle Distance triathlon returns to the Iconic Stourhead Estate in Wiltshire. The superb venue guarantees fantastic facilities and breath-taking scenery. Your supporters have no excuse not to join you in celebrating your Immortal Triumph!

A swim surrounded with mountains, a bike course in the heart of the Snowdonia National Park and a run through an awesome slate quarry - we challenge you to find a more iconic race than the Pedalcover Slateman Triathlon.

The race offers a unique mix of incredible scenery and challenge with a carnival atmosphere that makes all feel welcome.

Once again the Slateman will be delivered over two days, with the three tri options of the Slateman Sprint, Full and Savage available. Team relay categories are also available for both the Sprint and Full race distances.

Simply stunning were the words used to describe the venue at which the Grafman Middle Distance Triathlon 2018 is hosted. Located in the heart of Cambridgeshire, near the ancient Village of Buckden & St.Neots

The Grafman is well established within the triathlon community. This Event continues to grow, recently being voted National Event of The year 2014 and being selected for the Triathlon England Middle Distance Championships 2015 and British Championships 2016. Have you got what it takes to complete a 1.2 mile swim, 55 mile bike ride and a 13.1 mile run in less than eight and a half hours in 2018?

This is the 10th year of the Marlow Sprint & Olympic Distance Triathlon, consisting of a river swim, cycling and running. The event has attracted 1000s of participants over the year and is open to all levels of participant and encourages first time triathletes to the event.

The Swim course is in the River Thames. It is designed to make even the weakest swimmer get a fast swim split.

The Marlow Classic Half Iron Distance is the only long distance event in the Thames Valley and is a fairly flat scenic course taking in the views of Marlow and the surrounding areas.

The Bike course for the Sprint Distance is 24.5km & the Olympic Distance is 37km. It is an out and back course and only has two hills, but otherwise fast and flat.

The Run course for the Sprint Distance is a 1 Lap 5km route & the Olympic Distance is 2 Laps for a 10km. The course is on Tarmac and Grass Footpaths. It meanders back towards Marlow and into the finish at Higginson Park from the river tow path.

The event is set to attract over 700 participants, as the world of endurance sports and triathlon creates massive demand for longer distance events over the shorter distances that have originally formed this great sport.

The Deva Triathlon is an Olympic distance triathlon held in the centre of the historic City of Chester. It is currently in its 20th Year and is run by Chester Triathlon Club members.

We have had so many fantastic comments about the course being located right in the heart of the City. Transition is in the fabulous Grosvenor Park, a fantastic Victorian Park. The bike route will be a single lap (2 laps for the middle distance) into Wales via Eccleston, Rossett and Borras and back into Chester via Alford and Boughton. The run route will incorporate running over the Old Dee Bridge as well as the suspension bridge, along the Groves and in the meadows with the finish being at the Bandstand, a truly City Centre race.

The Wales Triathlon will take place in Fishguard, Pembrokeshire. Winner of the 220 triathlon awards for best triathlon, the weekend is ideal for new and experienced athletes alike.

The Fishguard Sprint Triathlon will take place in Fishguard, Pembrokeshire with a fast course set in an incredible location.

If you are looking for a race with an enclosed stunning sea swim; sea views, fantastic village support, topped off with one of the most breathtaking scenic runs on the circuit... read on!

Staffordshire is a landlocked county in the West Midlands of England. Part of the National Forest lies within its borders. It adjoins Cheshire to the north-west, Derbyshire and Leicestershire to the east, Warwickshire to the south-east, West Midlands and Worcestershire to the south and Shropshire to the west. Staffordshire is home to the highest village in Britain, Flash.

Titan Brecon Middle Distance Triathlon is back and promises to be bigger and better than ever. Titan Brecon is now firmly established on the British middle distance triathlon calendar.

A superb venue in the Welsh Brecon Beacons, with a beautiful lake swim, an epic bike course and a traffic-free park-based run.

Designed to appeal to both the experienced or novice endurance athlete the race is based in Keswick, with a superb transition area at The Theatre by the Lake. The swim takes place in the crystal clear waters of Derwentwater, generally regarded on the Lake Districts most scenic lakes. Both bike route make their way to the west coast of Cumbria where competitors get to experience a side of the lakes often unvisited by tourists, with mountains on one side and the sea on the other. During the run stage athletes will have the opportunity running through superb countryside with views to the likes of Skiddaw as well as a spectator friendly section through Keswick town centre.

The Cholmondeley event attracts over 1600 competitors to the beautiful countryside of Cheshire, offering the quintessential Castle Triathlon Series experience of competitive and fun racing, an epic castle backdrop and a stunning rural location.

All races at the 200-year-old Cholmondeley Castle start by launching into an open-water swim in Deer Park Mere Lake, transitioning on to a bike route that circumnavigates Bickerton Hill, which is the southern most tip of the Peckforton Hlls. There will be one cycle lap for the Super Sprint and two laps for both the Sprint Plus and Olympic distances.

The run passes through the estate grounds, which date back to the 12th Century, and has one lap for the Super Sprint and two laps for the Sprint Plus and Olympic races. Triathletes will finish their Cholmondeley race experience by sprinting down the main lawn to the finish line with Cholmondeley Castle as a fitting backdrop.

The Cholmondeley Castle Triathlon takes place in the beautiful grounds of Cholmondeley Castle, where the Cholmondeley family have resided since the Norman era of the 12th Century. The estate features extensive parkland covering 500 acres including two lakes, the larger of which, Deer Park Mere, is the setting for the open-water swim section of the triathlon.

To the south of Cholmondeley Castle, Tower Hill is the highest point of the run section, where athletes will be rewarded with panoramic views of the Beeston and Peckforton Hills, which they will have just covered on the undulating bike section, with the Welsh Hills looming in the distance.