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Ultimate 1/2 Triathlon

Click here to enter

Date: Sunday 29th June 2025
Venue: The Mere, Cremorne Gardens, Ellesmere, Shropshire, SY12 0PA
Swim: Lake: (Freshwater Spring Mere)
Starts From: 8:30am
Distances: 1.2 mile swim - 56 mile cycle - 13.1 mile run
Minimum Age: 18 Years (on race day)

Entry type:

Individual - Was £199 Now £125

Relay Team (2 or 3 in a team) - Was £219 Now £145


Please Note: Competitor Race Day Information (Individual Start Times, Bib Numbers etc) will be emailed out to competitors 7-10 days before the event.

The Event

Get ready to experience the thrill of the UK Ultimate Half Triathlon in Ellesmere! This incredible event combines the perfect balance of challenge and accomplishment in a breathtaking setting.

Dive into the freshwater Mere, test your cycling skills on demanding routes, and let the cheers of the crowd fuel your run towards the finish line.

The UK Ultimate Half Triathlon at Ellesmere is not only a test of physical endurance but also a celebration of personal achievement and the camaraderie among athletes.

Prepare for an unforgettable journey where you'll push your boundaries, and create memories that will last a lifetime. Embrace the spirit of adventure and join us for an exhilarating experience that will leave you inspired and transformed.


  • One of the fastest 'half iron distance races' in the country
  • Freshwater multi-lap swim in the freshwater Mere.
  • Picturesque countryside cycle route through parts of Wales and Shropshire
  • Fully tarmac run routes with closed to traffic roads and pathways
  • Swim start, transition & run finish all within a stone's throw of each other
  • Spectator friendly venue, great for supporting friends and family
  • For athletes convenience you register and rack your bike on race day for the Ultimate 1/2 Triathlon
  • Includes finishers medal and official race T-shirt
  • Award winning venue

Race Day Information

Please take some time to read all the event information, it will make it far more enjoyable for you and reduce the need to ask questions on the day. Good luck and have a great day!

If the half distance is not for you then the UK Ultimate Triathlon,  Ultimate Quarter could be what you are looking for.

Ultimate Tri.jpg Ultimate Half Tri.jpg UK Ultimate Quarter Triathlon logo.png
Don't want to go it alone?
Take part as a relay team of 2 or 3 and share the challenge of swim, bike and run!
We just need the team captain's info to complete an entry form and your team is good to go!
Limited number of places! Secure yours NOW!
For more information, see the sections below:

Start Times & Cut Off Times

Ultimate Half will start from 0830hrs with a rolling wave.

The cut-off times for the Ultimate Half Triathlon and Relay are as follows:

Swim: 1 hour 15 minutes after the start time

Bike: 6 hours after the start time

Run: 9 hours 30 minutes after the start time

Course Maps

PDF Documents: click each to open or download

Ultimate Half Triathlon - Site Layout

Bike Course Start/Finish

Swim Course

Ultimate Triathlon Swim course Half Distance web.jpg

Cycle Course

To view course direction & distance markers, please click on, “view full version” (top left-hand corner of the map) or run your mouse cursor along the mountain graph to see course direction.


Lapped course, 2 laps for the half distance.



Run Course


  Please only email queries to [email protected] when the full results are posted.

2024 Results

Previous year’s results



Event Photos


2020 Feedback on RaceCheck.com - Click Here

My first half, loved it, been reliving it all week. Everyone was so relaxed, supportive and helpful. Made the experience one I will never forget. I'll definitely be back to improve my time or even dare I say attempted the full distance x Thank you x

Deborah Clarke #366

First Middle Distance

What a great day, great event and great organisation.

The lake is fantastic, clear and warm when weraced. Bike chalenging without being too hard - pity about the A41 - zero local support on the route but great support at the turn point back at the lake.

Multi lap run with loads of feed stations and passes the finish area each lap so great for supporters and atmosphere.

Thouroughly enjoyed it and will be back...

Ian Cartwright #625

Yesterday's eventat Alderford was brilliant once again, I completed the ultimate half and the organisation and helpfulness of the team was brilliant.

Well done to allinvolved.

Mick Hutchins #211

Entry Form

Ultimate 1/2 Triathlon 2025 Early Bird

On Sale: £125.00 was £199.00

(Price per race entry or per relay team)

The price will adjust automatically when event is selected.

Transgender policy
Only people who are female sex at birth are eligible to compete in the Female category.
All individuals including transgender people are eligible to compete in the Open category. Responses to this question will enable us to allocate competitors into the correct race category as required under the British Triathlon Transgender Policy effective 1 January 2023. This policy can be read here and provides more information regarding race categories and eligibility.
For any queries about the transgender policy, please email [email protected]


Telephone Entry

If you would prefer to enter over the phone please call

01270 842800 and secure your place today!

(Lines are open Monday to Friday, between 9:30am-3:00pm).

Wetsuit Use

We will be taking a water temperature Sunday Morning.

We advise that all competitors bring their wetsuit as well as suitable swim attire.

a.) The use of wetsuits is forbidden or mandatory if the following combinations of distance and water temperature are attained:

Wetsuit info.jpg