Group S

(TriStart - born in 2016)

Group S train Saturday morning during school terms at our main training venue at Carver Barracks.  This training comprises of Bike & Run training and transition training.  Please  read the weekly newsletter for any updates to the training venues.

The aim is to introduce children to the sport in a fun way, with plenty of games with a high emphasis of developing balance and coordination skills and safety whilst cycling.

Swim training is now provided on Sunday afternoons and is an extra session to Saturday training; more information can be found here.

From Sept 2023 the group is for those who were born in 2016 who will race in the Tristart age group in 2024.

Florence Greatrix is the Group Leader and can be contacted at Florence is supported by: 


Coaches Junior Activators
Florence Greatrix Marianna Hatzixanthi
Sarah Switzer Grace Wardle
Ali Blackwell Olivia Sanders
Iona Page  
Laura Sims  

You will find details of how to apply to join Group S on the membership page.


Flo Greatrix

Group S Group Leader

(Level 2 Triathlon)

Flo Greatrix

Flo joined the coaching team in September 2020 after completing her Level 1 course in March and recently moving to Saffron Walden. 
Flo has a swimming background and started triathlon in 2014 after doing a charity event with friends. Since 2018 she has represented the GB Age Group team a number of times over sprint, standard and middle distances. She can often be found running on the local trails or riding with Walden Velo. When not training or coaching, Flo works in science policy at University College London

You can contact Flo at


Aged 8 at the 31 December of the year race is held. 

This is the youngest age group at which children can take part in a triathlon and is based on age at the end of the year. TriStarts belong to Group S of our Saturday morning training groups .

Races are usually held on school playing fields on grass. Open water races are rare and if cycling on tarmac it will be on roads without traffic. Because of the very short distances, quick transitions are very important.

TriStarts can compete in our Club Championship and in the Eastern Region Children' League and there is asummary of all races on our East Region Race Calendar. On these pages the links tell you about each race and how and when to enter.

The standard race distances set out in the BTF rulebook for this age group are:

  • Swim 50m (pool) 50m to 100m (open water)
  • Bike 1000m (grass) 1.5km (tarmac)
  • Run 600m
  • Run 400m
  • Bike 800m (grass) 1.5km (tarmac)
  • Run 200m
  • Swim 50m (pool) 50m to 100m (open water)
  • Run 600m