Redland City Relay for Life is underway at the Redland Showgrounds in Cleveland.
The annual event raises money for Cancer Council Queensland.
The event opened at 3pm on Saturday and walkers continue to laps until 9am on Sunday.
A total of 33 teams and about 500 walkers were expected to take part throughout the night.
Relay for Life committee member Wendy Boglary said the event is a time to celebrate people who have survived and to remember people who have passed away from cancer.