The event, which attracted close to 900 participants in both 2018, '19 and over 1000 in 2017, will run this Sunday from Lake Pertobe with final registrations still being collected from 10am till 2pm on Saturday.

Close to 600 participants have already signed up online for the fun run.

Murphy and the Surf 'T' Surf committee are expecting at least another 300 to register in the final two days of registrations at Lake Pertobe on Friday and Saturday.

He said the numbers were on par with what they were at this stage last year.

The main draw card is the 10-kilometre run, which takes in sights such as Lake Pertobe, the War Memorial, Warrnambool Cemetery, Hopkins River, Proudfoots and the Fletcher Jones building on a challenging course.

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But the three-kilometre Lap of the Lake and six-kilometre run and walk events are also popular choices for many entrants who prefer a shorter distance but still want a challenge.

Murphy is tipping Rachel Ayers to take out the women's 10-kilometre and Warrnambool hopefuls Tom Hynes, Sam Ebney and Hamilton's Brendon Paterson are favourites for the men's race.

The Bureau of Meteorology is predicting weather to be partly cloudy with a top of 20 for Sunday's event.

The 10-kilometre run starts the day at 8am with the six-kilometre run (8.15am) and walk (8.20am) following closely behind. The three-kilometre Lap of the Lake sets off at 8.25am.

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