Sun 9 Jul 2023 Eastbourne, East Sussex, UK

IronBourne Long Distance Triathlon | Swim

The beautiful seaside town of Eastbourne welcomes swimmers of all abilities and experience back for the IronBourne Triathlon's swimming-only event. Experience the jump from the historic pier!

  • Sun 9 Jul 2023
Western Lawns, Eastbourne




Age 15 & over

  • 3.8 km sea swimming


The beautiful seaside town of Eastbourne welcomes athletes back for the IronBourne Long Distance Triathlon!

Athletes of all abilities and experience levels from novice to elite can sign up to take on the challenge which features a memorable jump from the end of the pier!


  • Full and middle distance triathlons on the Sunshine Coast
  • Starts with a spectacular jump from the end of Eastbourne's historic pier
  • Cyclists enjoy closed roads through the South Downs National Park
  • Runners are treated to a flat and fast route along the promenade
  • A must-do 'bucket list' event for the height of the triathlon season
  • Aquabikes, swimming-only event, marathon and triathlons
  • Ideal for spectators - bring your family and friends along
  • Enter now to get the best prices

This event is part of IronBourne Long Distance Triathlon.

  • Event expo
  • Event village
  • Families
  • Free venue entry
  • Newcomers
  • Spectators
  • Swim hat provided
  • Teams
  • Traders at event
  • Wetsuit advised
  • Wetsuit not allowed if too hot
  • Wetsuit optional
  • Wetsuit required if too cold
  • Wheelchair users


  • 13:00-18:00 | Registration and transition are open


  • 04:30 | Transition opens
  • 05:30 | Transition closed
  • 05:50 Long distance triathlon start (self-seeded rolling start)
  • 06:00 | Middle distance triathlon start (self-seeded rolling start) 
  • Races take place throughout the day
  • 16:30 | Last Long-Distance Bike finisher (10hr 30 total time cut-off)
  • 21:45 | Final run lap cut-off
  • 23:00 | Last Long distance finisher (17hr total time cut-off)

Participants with a disability

This is an inclusive event and participants with disabilities are encouraged to get in touch with a description of the disability which will be assessed and accommodated wherever possible.


IronBourne is a great event for spectators, and you are encouraged to bring your friends and family to watch you race. The location next to the beach is great for the whole family. This year the event will be bigger and better than ever featuring a full event village with a bar, food, ice-cream and various other vendors and stalls.

Once the swim has finished there is a great walk up onto the downs where you can watch the cyclist coming up over Beachy Head. You can then walk down into Whitbread Hollow to catch runners on the first lap of their run before returning to the Western Lawns to catch the finish.

There are many great cafes along the seafront where you can watch the run.

  • Accommodation
  • Cafe
  • Coast
  • Toilets
  • Urban

Event HQ

Western Lawns
King Edward's Parade
East Sussex
BN21 4EH

The Beach Deck Cafe

Great food, great views, great times

Fabulous breakfasts, delicious coffees, relaxed lunches and heavenly dinners. Located directly on the beach, offering stunning views from all table inside and out. The perfect place to sip your favourite chilled wine or enjoy one of the spectacular dishes out on the deck.

  • Cut off time
  • First aid
  • Marshals
  • Multiple laps
  • Rolling start
  • Water stations
  • Way markers

Perfect for

Open water swimmers. Ironman athletes wanting to practice the 3.8km swim ahead of an Ironman later in the year.

Route overiew

The swim start is one of the most iconic starts on the triathlon calendar, with a jump off the end of Eastbourne's historic pier! The 3.8km swim includes an "Aussie Exit" at the half way point.


  • Plastic-free event
  • Recycling
  • Sustainability policy
  • Trees not tees

  • Chip timing
  • Medal
  • Pre-event training sessions
  • Technical t-shirt
  • Training plan


 First three male and female and first three veteran 40+ male and female.


  • Full refunds

  • Age 15 & over
  • Collect race pack
  • Enter online
  • Event merch available
  • Full refunds
  • Insurance available

I've completed four different ironman distance triathlons and have to say this was the best and not just on value for money which it clearly is but the imagination around the course was brilliant, the organisers were so supportive and this is put together by triathletes. I loved and recommend this event. Richard W

This was my first ever triathlon and I loved every minute of it. The fantastic views coming back over the downs (cycle leg) was a definite highlight. Just booked to do again next year. Thanks for an amazing event. Mick M

Such an amazing event. Course was quick. Post-race food and massage was great and the start off the end of the Ppier I think will become iconic in the triathlon world. See you next year without fail. Jonny S

The Ironbourne team have done it again. A smashing event. So many memories.. I don't think there are better, more thoughtfully organised triathlon events out there. Richard C

Fantastic race, marshals were very supportive, loved the jump off the pier and the bike was super fast. Highly recommend. Jo B

Awesome event, from jumping off the end of the pier at the start right through to the finish of the run. great fast, honest course and superbly organised in a great venue. highly recommend doing this race! Tom D

Other races at event

  • Sun 9 Jul
  • #1 of 6
Western Lawns, Eastbourne

Long Distance Triathlon



Age 18 & over

  • 3.8 km sea swimming
  • 180 km road cycling
  • 42.2 km road running
  • Sun 9 Jul
  • #2 of 6
Western Lawns, Eastbourne

Middle Distance Triathlon



Age 18 & over

  • 1.9 km sea swimming
  • 90 km road cycling
  • 21.1 km road running
  • Sun 9 Jul
  • #3 of 6
Western Lawns, Eastbourne

Full Distance Aquabike



Age 18 & over

  • 3.8 km sea swimming
  • 180 km road cycling
  • Sun 9 Jul
  • #4 of 6
Western Lawns, Eastbourne

Middle Distance Aquabike



Age 18 & over

  • 1.9 km sea swimming
  • 21.1 km road cycling
  • Sun 9 Jul
  • #6 of 6
Western Lawns, Eastbourne




Age 18 & over

  • 42.2 km road running