The Triathlon took place Friday 20 August 2021 at Amager Beach Park in Copenhagen.
The disciplines were based on the Olympic distance, which means the Triathlon featured:
- 1500 m swimming
- 40 km biking
- 10 km running
Copenhagen 2021 organised the tournament in cooperation with Pan Tri & Bike, Ironman Copenhagen, tri club Denmark and The Danish Triathlon Federation.