Brisbane legend Jonathan Brown, Essendon defender Marty Gleeson and Port Adelaide young gun Willem Drew were announced as ambassadors for the 2019 Tower Hill Challenge on Wednesday.

The challenge, which will take place on December 7, is run by the Koroit Football Netball Club with the aim of raising money for the club and other community groups around the Koroit district.

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Brown, whose father Brian assists with match day duties for the Saints, heavily endorsed the challenge.

"This event is a fantastic opportunity to promote the south-west region of Victoria while raising some much-needed funds for the local Koroit community," the 38-year-old said.

"Whether you're just wanting to take part in an obstacle course for the first time, or there as a team, the Tower Hill Challenge is perfect team building opportunity and caters for individuals of all ages and fitness abilities."

Koroit president Steve Hoy was unsure if the trio would take part in this year's challenge but said they were more than happy to give back to the community as ambassadors.

The event starts in the extinct Tower Hill Volcano with participants setting off to combat either three, six or 15-kilometre obstacle courses that all finish at the club's home at Victoria Park.

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