Group S

(TriStart - born in 2010)

train for one hour from 8.30am to 9.30am on Saturdays during school terms. From Sept 2017 the group is for those who were born in 2010 who will race in the Tristart age group in 2018.

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.

Children joining the group will be expected to be able to swim front crawl for at least two lengths without holding on to the sides.

Arlene Mclean is the Group Leader and can be contacted at She is supported by Sarah.

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

Geoff Jones

Junior Head Coach and Group S Leader

(Level 2 Triathlon and Level 1 Athletics)

Geoff Jones

Geoff coached the Juniors at Cambridge Tri Club for a number of years prior to setting up WaldenJNR in 2009. In 2010 Geoff was named British Triathlon’s National Children’s Coach of the Year and in 2014 Eastern Regional Coach of the Year.

He has represented Great Britain at five Age Group World Championships at Olympic distance in 2002, 2003, 2005, 2006 and most recently at the London World Championships in 2013. Prior to this he was a track runner competing at 800m and 1500m. He has worked in business for over 20 years as a Chartered Accountant, and for 7 years as a Maths Teacher. He now runs his own Maths Tuition Business in the centre of Saffron Walden called Accelerate Tuition.

You can contact Geoff at

Ella Hall

Group S Coach

(Level 1 Triathlon)

Ella Hall

Ella joined the club in April 2010 and currently trains with Group F. She joined the Group S coaching team in 2015 and immediately proved to be a very popular coach with the children. She qualified as a Level 1 Triathlon coach in February 2016, making her the youngest qualified coach in the club's history.  She loves junior coaching and would recommend it to other members of the club.

Leon Bozianu

Group S Coach

(Level 1 Triathlon)

Leon Bozianu

Leon joined the club when it was first formed in 2009 and currently trains with Group C. He qualified as a Level 1 Triathlon coach in November 2015 and has been helping coach Group 2 since 2014. He is a very experienced triathlete having competed in many triathlons and in 2013 competed for the Eastern Region at the National (Inter Regional) Championships. He is also a talented Hockey player who competes up to county level, and manages all this with his school work. His brother Theo is a members of the club.

Weekly Schedule - Group S

The Group S weekly schedule of training on Saturdays for Autumn Term 2017 to be confirmed.

Below is an example of the training sessions for Summer Term 2017.

  8.30am to 9.30am
22-Apr Swim
29-Apr Bike
06-May Run
13-May **Wimbish**
20-May Swim
27-May Bike
03-Jun Half Term
10-Jun Run
17-Jun Swim
24-Jun Bike
01-Jul **Wimbish**
08-Jul **Wimbish**

Wimbish Groups S sessions run from 8.30 to 10.30am


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

WaldenJNR Tri Start members in action

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 800m (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