More than 15,000 people will flood the streets of Manchester and take part in the Great Manchester Run.
And among the thousands taking part, there will also be 15 people running the race dressed as the Hulk.
For 14 years Peter Broude competed in the run dressed as the superhero to raise money for The Christie and in memory of his son Robert who died in 2004.
Sadly Peter passed away in May 2020 - but his family and friends will continue the legacy during Sunday 10km run.
Pete’s son Mark said: “All the runners are going to be dressed up as the Hulk in the same way that dad was dressed up as the Hulk for the 14 years that he did the race.
“He dressed as the Hulk initially because Rob, before he got ill, used to love doing fun runs and used to dress as the Hulk doing fun runs.

“So after Rob died, dad thought it would be a good way of remembering him by doing the fun runs and the Greater Manchester Run raising money for him dressed as the Hulk as well.”
Another of the runners, Jonny Reuben who was a friend of Rob’s from school, added that Rob liked to dress up as all sorts of characters.
He said: “We’re quite pleased he chose the Hulk, because Rob liked to dress as other characters like from Rocky Horror Show.”
So far, family and friends have raised more than £465,000 and want to reach Peter’s goal of £500,000 for The Christie.
Peter’s wife Helena told the Manchester Evening News how after her son Rob died from a rare form of Leukaemia, they started to raise money for the hospital, and were able to raise enough to build an outpatient's unit.
She said: “After Robert died in 2004, we started raising money and our initial fundraising built the Rob’s Day Unit at the Christie. It’s the teenage and young adult unit.
“We’ve been fundraising since then really, and Pete ran for 14 years until just the last one before the pandemic."

The group agree that they all dislike running, like Peter.
“He hated running, he wasn’t really the shape, he was an ex-rugby player, so wasn’t the shape for running but he was determined to raise the money and wanted to reach £500,000.” Helena said.
Meanwhile, Sheridan Broude, Pete's daughter-in-law, explained that none of them are runners, saying: "We’re just not runners. I don’t like it either. But Pete didn’t like it, and if Pete can do it, we can do it.”
Mark added: “We did [a 10k] a few years ago, but outside the Manchester 10k, I actively refuse to run any kind of distance.”
Meanwhile Jonny described the group's athleticism by saying: “It’s safe to say, none of us are runners, like the extent of the exercise is driving with the window open.”
However, they all feel that Peter would have really enjoyed this tribute, and to know that his legacy has continued.
“Yeah, it’s a nice tribute, it’s always been his goal to get the £500,000, so we didn’t want that to stop, just because Pete wasn’t doing the run anymore.
“So we thought, let’s carry on his legacy, and what better way than us all to do it as well. Which I think he would have found quite amusing.” Jonny said.
If you wish to help the Hulks on their mission to reach £500,000, then click here for their JustGiving page.