It's turned a generous act by an individual into a whole community effort and something of which the community should be proud.

That's according to Mr Blair.

"Without them (community members) it would just be me doing a run like I would on any other day," he said.

Mr Blair will run 100km from Launceston to Devonport to help raise funds for the Devonport youngster, who is receiving treatment for acute lymphoblastic leukaemia.

Mr Blair said the run had received overwhelming support from the local school community, with representatives coming on board from Devonport High School, Don College, Reece High School, St Brendan-Shaw College and Latrobe High School.

"All the kids are involved, all the schools are involved," Mr Blair said.

"From a community point of view it's been amazing."

Mr Blair said three support vehicles, containing representatives from each of those schools, would follow his run, collecting donations along the way and harbouring some keen individuals.

"Some of them are going to run with me for some of the way," Mr Blair said.

Mr Blair said preparing for a run like this was just as much mental as physical, but said he definitely had to be mentally tough.

"My pain is temporary, compared to what Charlotte's going through."

Tim Blair's run for Charlotte will be held on August 25.