The walk, around Holkham, will be launched by Bafta-winning actress Olivia Colman on Saturday, September 14.
Tracy Wood, 40, a nurse from Kings Lynn, put on her walking boots outside Holkham Hall with her two sons, Marley Carter, 10, and Sonny Carter, aged seven.
The family will be taking part in the Alzheimer’s Society’s Memory Walk, in memory of Miss her three grandparents who all lived with dementia.
They will also be walking as a tribute to the many people with the condition who Tracy meets through her work as an auxiliary nurse in A&E at the Queen Elizabeth Hospital.
“I meet people with dementia every day through my work as a nurse and I see the devastating affect it can have on both them and their families,” said Miss Wood.
“I can relate to their situation as my grandma, granddad and my nana all lived with dementia.
“It really was a heartbreaking thing to witness, especially as it touched so many of the people I cared about. When I heard about the Memory Walk at Holkham Hall, I knew I had to take part, and have been encouraging friends, family and colleagues to come and walk with me.”
Memory Walk is Alzheimer’s Society’s flagship fundraising event which sees walks taking place around the UK throughout September. For the third year running Memory Walk will be held in partnership with Bupa Care Homes.
Together, Alzheimer’s Society and Bupa aim to support more people living with dementia through the vital funds that are raised.
Miss Wood was joined at the launch by Dawn Thirkell, 35 and her children Sophie, 10, Charlie, aged seven, and Hollie, aged three.
Mrs Thirkell said: “My daughter, Sophie and I have decided to take part in the Holkham Hall Memory Walk alongside Tracy and her family and do what we can to support Alzheimer’s Society.
“My auntie had dementia and I remember the way my father and the rest of the family were affected by it. I don’t think there is enough done to raise money for people with dementia – it’s an issue which seems to get forgotten.”
More than 10,000 people with Alzheimer’s are believed tolive in Norfolk alone.
Participants at the Holkham Hall Memory Walk can choose between a gentle 3km walk or a more challenging 10km walk. The routes will wind around the estate’s grounds, as specially landscaped by the famous Lancelot “Capability” Brown, spotting various wildlife, beautiful woodland and the famous deer residing in the park.