Michelle Long says it has been "a tough few months" for the family following the death of her brother Adam Simpson.
But, they have been inspired by an amazing response to a fundraiser they organised to kick off their participation in this year's Relay for Life.
Adam, or "Simmo" as the son of Sutherland Shire's deputy mayor Steve was better known, lost a 14-year struggle against brain cancer in November last year.
Adam died at the age of 40 in his family's Alfords Point home, cared for by his mother Rhonda, a nurse.
"As a family we were feeling like this year's Relay for Life would be too much and too soon," Ms Long said.
"But, over the last few months, we have had so much support from so many people who want to walk with us in the relay to honour Adam – it’s been amazing.
“Adam was a passionate supporter of brain cancer research.
“I think taking part in the Relay for Life is a way of keeping his memory alive for all of us and we want to do him proud and show him just how much he meant to all of us."
The Relay for Life will be held in Don Lucas Reserve, Wanda, on the weekend of May 4-5.
As a lead-up to the event,, Ms Long and her sister Lisa Thomas decided to hold a a trivia night at Club Central Menai on Friday, March 22.
"We thought we would be going to get 80, but it has sold out, with 290 people coming," she said.
"We are overwhelmed so many people want to join together to celebrate Adam, enjoy some laughs and raise as much as possible for the cause.
“For people who have missed out on tickets, we would still love their support by making a donation to our Cure For Brain Cancer team page on the Relay for Life website."
Adam joined in the last two Relays for Life at Don Lucas Reserve, knowing his time was running out but wanting to help others.
In 2016, he walked both days and last year he helped set up the team's base.
Last year, the team raised more than $16,200 for Cancer Council and this year their goal is higher.
Ms Long said while Adam's absence from this year's event would be a source of sadness, his family and friends believed there was "still much to celebrate about the man who inspired everyone with his strength and resilience in a long journey with brain cancer".
- Donations to the Simpson family's Cure for Brain Cancer team: cancercouncil.org.au/relayforlife