This year's event is the fifth time the Forbes Crocs Running and Tri Club have hosted the triathlon - and it is expected to get bigger and better according to Forbes race organiser Nick Turner.

Mr Turner said they have had people from Sydney, the Central Coast, Victoria and from around the region register for this year's triathlon.

There's a race to cater for all levels of fitness, from the shorter 'Croc Snack' all the way to the endurance testing 'Crocs Challenge'.

This year doesn't include the long course half ironman which featured at last year's triathlon.

Along with the three main distance events, this year will see the return of the Mini Crocs race for the kids.

Events programmed at this year's Forbes Crocs Running and Tri Club triathlon include a Crocs Challenge, a Crocs Sprint, the Crocs Snack and the Mini Crocs.

The Croc Challenge starts the day off and will see competitors hit the water at 7am for a 1km swim, followed by a 60km bike ride and finishing up with a 10km run.

The Croc Sprint is the middle distance event offered by at the triathlon and is set to start at 8am with a 500m swim, 30km bike and 5km run.

The Croc Snack will see competitors undertake a 250m swim, a 10km bike ride and a 2.5km run which is set to start at 8.30am.

The Minicrocs wraps up the day of racing with a 50m swim, 1km bike ride and 250m run.

Mr Turner said the course is very similar to last year with the swim at the Lake Forbes Aquatic Centre, followed by the ride taking place on a flat and fast course out Bedgerebong Road and the run which follows a path around Lake Forbes from the Aquatic Centre area.

All ages can take part and there are prize divisions for first and second placed male and female in each event.

Registrations can be completed online via the Forbes Running and Tri Club's website at www.forbesrunningandtriclub.com/.

If you miss out on the online registrations, you can still register on the day, but make sure to get in before 7:30am if you want to compete.

Organisers won't be accepting on-the-day registrations for the Crocs challenge.

Entry into the Mini-Crocs is free, you can turn up on the day between 10 and 10.30am to sign up and be part of it. People can also enter as a team.

Mr Turner said entering as a team is a good introduction to triathlons for kids and others who have not taken part in any before.

Organisers urge people to give a triathlon a go to challenge themselves and also for the sense of achievement and accomplishment that completing one gives.

For those wishing to compete against their own personal best times, Precision Sports Timing (PST) will take care of the timekeeping function. As part of PST's process, timing bands will be used and secured around each athlete's ankle.