ATW Hertfordshire and Middlesex Triathlon July 2023

In 2023, we are excited to announce that both the Hertfordshire and Middlesex Triathlons will be run from Merchant Taylors' School, a stunning venue sitting on the Hertfordshire and Middlesex border with magnificent, picturesque grounds including manicured sports fields, lakes, wildlife and greenery.

Swim in the most popular open-water venue inside the M25, and cycle a surprisingly rural route before enjoying a run around the picturesque grounds of this stunning school.

This is a mass-start non-draft legal event with starts from 7:15am.

This event is for athletes of all abilities and ages.

Transgender athletes are, and will continue to be, very welcome at recreational and competitive activity in Triathlon. At any competitive event from 1st January 2023, there will be a Female category open to athletes who are the female sex at birth and an Open category open to all other athletes.