The most scenic race in Sydney

The Andrew Boy Charlton Biathlon Series commenced over a decade ago with over 10,000 people who have participated in this race series.

Approximately 1,500 race go-ers participate in this race each year and the ABC Biathlon Series has become a favourite on the Sydney calendar. 

2021 Spring/Summer 2022 Series

Registration Opens:   5.30-6.15pm
Race Start:   6.30pm   
Price:  $30
Race Waves:  4 waves (5 mins apart)
Race Capacity: 80 participants

Please note that we close the race as soon as we hit 80 people. There are no refunds if you miss the race. You can transfer yourself to another race in the future as long as you do it by the Wednesday before the Thursday race.

4km Run


300m Swim

About the race

The ABC Biathlon Series consists of a 4km run in and around the Domain & Royal Botanic Gardens and is followed by a 300m swim in the Andrew Boy Charlton Pool.

It takes place every Thursday night in spring & summer commencing at 6.30pm.

All fitness levels

No matter if you are a casual weekend jogger, or a seasoned triathlete, we welcome all ability levels. We’ve even had superstars such as Pete Jacobs (Hawaiian Ironman Champion) & Lisa Norden (Triathlon Olympic Silver Medalist) participate.

It’s all about participation, if you can’t make the full 4km feel free to walk a little. 

Biathlon Race Details

Our 2021 ABC Biathlon Series has now begun. Below are all the details

SPRING 2021/SUMMER 22 Race Calendar

Race 1  –  November 18

Race 2  –  November 25

Race 3  –  December 2

Race 4  – December 9

Race 5  – December 16

Race 6  – January 13 – CANCELLED

Race 7  – January 20 – CANCELLED

Race 8  – February 3

Race 9  – February 10

Race 10 – February 17

Race 11  – February 24

Race 12  – March 3

Race 13  – March 10

Race 14  – March 17

Race 15 March 24

A maximum of 80 people will be allowed each race due to COVID-19 restrictions.

No refunds or transfers will be given.

Registrations on the day is no longer available.


Andrew Boy Charlton Pool

1c Mrs Macquaries Road, Sydney NSW 2000

Race starts in the carpark in front of the entry to the pool


There are some important changes about the run and swim course

Arrive from 6pm for registration, check in, and race number

Each wave will be called, and each wave participants number will be called. 

Ensure that you are ready early, please note due to numbers we may move you from your nominated wave. 

The Course Map

START:  Carpark of ABC Pool

FIRST TURN:  Stairs of Mrs Macquaries Chair

SECOND TURN:  Gate entry just past Art Gallery of NSW

THIRD TURN:  Stairs of Mrs Macquaries Chair

FOURTH TURN:  Walk down stairs at the back of ABC pool

THEN:  Swim 300m

We assemble at the parking area in front of the Andrew Boy Charlton Pool, we start you off by running North, near Mrs Macquarie’s Chair you’ll find cones which indicate to go up 4 steps and run back south on the upper path towards Hospital Rd.

At the turn around point one of our staff members will tell you your running time so far and will indicate you to turn around and run all the way back the same way you came. At the North end of the pool you will find the entrance to the pool, there are steps down to the pool deck. Ensure that you will carefully make your way down the pool steps.

The Race Instructions and Rules

Each wave is limited to 25 participants, with 4 waves per race.

There will be no refunds once registered

There will be no tranfers if you are unable to attend

Lockers are available in the changerooms for valuables

At the registration desk:

  • get your race number
  • fill in the sign in covid sheet
  • get your temperature check by pool staff



You must be REGISTERED at the pool and on the start line 10 mins before your allocated Start time.

All wave participants must social distance at least 1.5m apart prior to their wave being called.

Each wave will be called, and each wave participants number will be called. I.e. No 1 & 2 to the start line. Every 10 seconds 2 participants will be called up to the start line.

You must be ready and know your number and start time. Otherwise you will miss your race.

We must be stringent with this as we must comply with COVID Safe practices.

It is essential that the participant is at the Race Start mark and ready for their start time


On the pool deck shed anything you do not want to wear in the pool and jump into any of our nominated lanes.

Swim 6 laps in the one lane – no changing Lanes this season!!!

You must swim in one of the following 4 lanes (5, 6, 7, or 8)

You must stick to only one lane this season

Complete your 300m swim in the same lane which you enter

Once you have finished your 6 laps then you will receive a POST IT NOTE from our time recorders who will be at the end of your swim Lane.

Exit from the pool and take your time to our recording desk