MAIREAD Philpott's father Jim Duffy is taking part in the Long Walk Home – a fundraising trek from Skegness back to Derby to raise money for disadvantaged children.
Around 30 people will travel to Skegness on May 6 and then begin a four-day walk back to Derby starting the following day.
The group hope to arrive in Osmaston Park by 1pm on May 11 – the first anniversary of the fire.
It will coincide with a giant memorial fundraising fun day in the park which the organisers hope will become an annual event and a permanent legacy to the children.
It has been arranged by charity Catch Me When I Fall – set up last year in memory of the children – to raise money for youngsters in need.
Mr Duffy said: "I feel I need to do something for the memory of my grandchildren.
"It is something I have to do to firstly help remember them and secondly to give me piece of mind.
"Something good needs to come out of what is such a terrible tragedy and I hope the walk and the fun day will be that thing.
"I have been told that Richard Philpott (one of Mick Philpott's sons from a previous marriage) and Bryan Mosley (Paul Mosley's brother) will also be taking part."
What will make it all the more harder for Mr Duffy is that three years ago he underwent surgery for a knee replacement and now walks with the aid of a stick.
He said the organisers have agreed to take a wheelchair to push him when the pain of walking becomes too much.
Mr Duffy said: "The aim is to walk 25 miles a day and I am determined to cover as much as that as I can without the need to get in the chair.
"But I am realistic and I know that I won't be able to cover the entire amount.
"If I can manage five or six miles a day I will be happy and the thought of the grandchildren will push me as far as I can go.
"I have a strong feeling I am going to succeed with this walk.
"I owe it to my grandchildren and I owe it to my family."