We are excited to announce that the Hertfordshire & Middlesex Triathlon will be returning to 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 with three distances to choose from:
- SuperSprint - 400m Swim - 12km Bike - 2.5km Run
- Sprint - 750m Swim - 25km Bike - 5km Run
- Standard - 1500m Swim - 42km Bike - 10km Run

If you dont want to tackle all three disciplines yourself, there is also a relay option and an Aquabike (Swim-Bike) on offer.

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.

Reasons to enter this event:

Stunning venue 

Easy access from the M25

Well marked course 

Supportive marshals

5 star reviews on racecheck 

Custom designed medal 

Finish line snacks & goodies