The biggest duathlon series in Ireland is back for summer 2018!

The Phoenix Park Duathlon Series is returning to Dublin’s Phoenix Park over 3 dates:

Saturday, 21st of April (National Series) - 10am start Completed
Wednesday, 6th of June - 7.30pm start Completed
Wednesday, 11th of July - 7.30pm start Book Now







Junior Race

Your children aged 6-13 can take part in June & July, before the adult race. Find out more here >>

Course Description


The duathlon consists of a run, bike and run again. View course maps & watch videos on the Course Description page. The race location is close to the Papal Cross in the Phoenix Park, Dublin.

  • April 2018: 5km run, 20km cycle, 2.5km run
  • June and July Races: 2.5km run, 12km cycle, 2.5km run.
  • Junior distances vary per age group, see Junior page for info.

Roads will be closed for our races, making this is a great event for beginners and people who want to push towards the podium. We’re offering a super mix of prizes and the race will be timed electronically with results & photos available online. This is a 100% club-run event and is fully sanctioned by Triathlon Ireland.

News: the bike course has been improved – the direction has changed to clockwise; the road surface is now fresh tarmac at the bottom of the Khyber Pass and the no overtaking restrictions have been removed from the hospital corners

How to Enter

Enter via the Triathlon Ireland website – click "Events" and open the Race Calendar and find our race. Click the ENTER button.

Online entries for the July race will close Monday the 9th of July @ 11:00pm. After that late entries can only be purchased at race HQ on July 11th at cost of €25 (+€15 ODM if you don’t have a valid TI Race License 2018).

Entry Fees

  • €55 - 3 race discount offer

  • €25 - April race
  • €20 - June or July race
  • €5 - junior races


5.30pm Registration Open
6.00pm Transition Opens
6.10pm Junior race starts (wave 1 of 3)
7.00pm Registration Closes
7.15pm Transition Closes
7.20pm Race Briefing
7.30pm Race Starts - wave 1
7.37pm Wave 2 starts
7.45pm Wave 3 starts
8.45pm Prize Giving


Late registration will be available in the Phoenix Park on the day from 5:30pm 6:45pm.

Please ensure you bring your Triathlon Ireland I.D. or printed proof of One Day Membership (ODM) + photo I.D. in order to register.

Limited entries on the day will be subject to availability.

Note: All participants must either be a Triathlon Ireland member or purchase an ODM in advance from Triathlon Ireland. This is non-negotiable as the race is being run to best-practice Triathlon Ireland standards. The ODM fee of €15 is now included in the booking fee.

Adult race minimum age (16) by 31-Dec-18

Junior race open to 6-13 year olds, in 3 separate waves per age category.

Temporary TI membership cards can be printed from the TI website if your permanent card is not received in time.

ODM (One Day Membership) can only be purchased up to 2 days before the race (11pm), when race entry closes.

Corporate & Group Bookings

Do you have a sports & social club at work, or perhaps a number of colleagues would like to enter? We now offer bulk bookings for group entries (this is not a relay race option).

Please contact us to request a group booking today.

Visit our Facebook page, follow us on twitter @belparktri for more news, or email