Secure your space at the Velodrome, Sun, 3 Nov!

Welcome to the BADTri Junior Section

What is Triathlon?

Triathlon is a multi-disciplinary continuous sport which requires athletes to complete a swim, bike and run, one after the other. Triathlon is an endurance sport and our training focuses on fun, but also allows development of endurance. We regularly see our members doing well in other endurance based activities during school time (e.g. cross country, distance running, junior cycling and swimming).

Triathlon is just one variant of multi-disciplinary endurance sports. Examples of other variants are Aquathlon (swim - run) and Duathlon (run - bike - run), both of which we also support and embrace.

What do we do at the BADTri Junior Club?

We are a very busy club and very well supported by our parents who help out the coaches in each session. We actively encourage parents to get involved but it is not compulsory. Most of the coaches began as parent helpers and then went on to get a training qualification from the British Triathlon Federation ("BTF") to allow them to lead and organise the sessions we run. The club will fund the cost of the training in return for a commitment of a few years on the training rota.

We meet each Saturday at Henbury Leisure Centre and have two two-hour training sessions starting at either 3pm (until 5pm) or 4pm (until 6pm). All our coaches are DBS checked and are willing and qualified volunteers who are often themselves members of BADTri.

The first hour of each session alternates weekly between a bike and a run session and the second hour is always a swim session. The format of the session starting at 4pm is the same as that of the session starting at 3pm.
All athletes are welcome from age 8 through to 17 years and sessions are tailored according to age and ability. The creation of sessions to suit all ages and abilities is one the coaches enjoy.
Please check if it is a run or bike week by checking out our calendar.
Bike Sessions: (alternate weeks)
All bike sessions are held at Henbury Leisure Centre. Please bring a well-maintained bike - brakes which work and tyres pumped up! Please wear a helmet, as otherwise you won't be allowed to join in, and appropriate clothing for the weather (water proof clothing if the weather is wet and warmer clothing if it is cold). When coaching and parent helpers allow, the older children (minimum age 14 and with parental permission) can opt to take part in a non-coached club ride on the quiet roads around Hallen and Pilning, returning in time for the swim set. This option is usually only available at the 3pm bike sessions.
Run Sessions: (alternate weeks)
Most of the run sessions take place in the grounds of Henbury School. We sometimes run to the nearby Blaise Castle Estate for a mix of distance, multi terrain and hill reps training. Please always bring a drink in a suitable container and remember to dress appropriately for the weather.
Swim Sessions: (weekly)
Please note: We ask that all swimmers are able to complete a 100m swim for their own safety and enjoyment as these sessions are not "swimming lessons" - but are triathlon-specific training workouts. We would also ask you to arrive in good time, such that the sessions can start on time.
Swimmers are allocated a lane which best suits their ability. The sessions are designed and aimed at developing our young athletes during the season and off-season. Each swim session will include a warm up, a main set and a swim down.
13pm - 4pmBike or run
4pm - 5pmSwim
24pm - 5pmBike or run
5pm - 6pmSwim

How much does it cost and how do I join?

Annual membership for Juniors is £20 and the year runs from April to March. If you would like to attend the club on a regular basis then you will need to join BADTri. Due to the facility space we have a membership cap of 160 athletes and will stop accepting memberships once this number has been reached. If you would like to join, but no spaces are available, please be patient as you are likely to be able to join at the start of the new membership year. Once you are a member, session charges, currently £6 per session, will apply. Payment is made through purchasing credits online before you can then book onto a session. These fees are to cover the hire charges of Henbury Leisure Centre.

We understand that triathlon is not for everyone and that you might like to try out the club before you join. If this is the case, please contact us, selecting "Juniors" as the subject line, and we will allocate a week for you to attend. The cost of the trial session is the same as above, plus a £1 day insurance fee. You will need to complete a day membership form and bring this to the relevant session, along with £7 in cash.


For a number of years we have run in-house club championships each year. They run from late February to early November and club championship trophies are awarded to our age group champions in an annual awards ceremony at the last training session before the Christmas break.

The championships consist of six internal events, run during training on Saturdays through the year and six external events chosen by the coaching team and published annually in advance for parents to book. In order to take part, you just must compete in at least one event, but in order to obtain a ranking, you have to compete in at least five events. Your best five scores count regardless of the number of events in which you compete. At least one event of the five must be external.

It adds spice to our in-house events as we are always amazed by the efforts the children produce once ‘competition’ starts.

BTF Affiliation

BADTri is BTF affiliated and it may make sense for you to join the BTF. For more information, visit our affiliation page.

Age Categories and Race Distances

There are six age groups in junior triathlon so you get to compete only against your age contemporaries. BTF rules state your triathlon age for any year is the age you will be on 31st December of that year. This benefits some children but not others, but rules are rules!

Use the tables below to determine your age category and corresponding maximum race distances.
Triathlon (Swim/Bike/Run)
Grass / Tarmac
Tri Star Start8 years50m800m / 1.5km600m
Tri Star 19-10 years150m2km / 4km1200m
Tri Star 211-12 years200m4km / 6km1800m
Tri Star 313-14 years300m6km / 8km2400m
Youths15-17 years400m10km2500m
Duathlon (Run/Bike/Run)
Grass / Tarmac
Tri Star Start8 years400m800m / 1.5km200m
Tri Star 19-10 years1.2km2km / 4km400m
Tri Star 211-12 years1.6km4km / 6km600m
Tri Star 313-14 years2km6km / 8km800m
Youths15-17 years
Aquathlon (Swim/Run)
Tri Star Start8 years50m600m
Tri Star 19-10 years150m1.5km
Tri Star 211-12 years250m2km
Tri Star 313-14 years400m3km
Youths15-17 years400m5km
For further, more definitive, information see Section 23 of the BTF Rules.

Further Competition (South West Junior Series)

Children aspiring to challenge themselves against the best in the area, the south west and perhaps even nationally, can enter the South West Junior Series. You have to be a BTF member to take part, which is an additional cost. A number of our own athletes have been proud to wear a South West Region Trisuit and represent the South West in the national IRC triathlon event that takes place in August each year.

Safeguarding Policy

The welfare and safety of all children in our care is of utmost importance to us. Please visit our Safeguarding Policy for further information.

More Information, Contacts and Membership

This is a friendly club that trains all children of any ability from 8-17 years of age. If this sounds like fun, then come along in term time and ask for a trial session.
If you would like more information about anything you have read here, please contact us, selecting "Juniors" as the subject line, and we will endeavour to help.