The reality stars came together at the Queen Elizabeth Olympic Park in Stratford on Thursday afternoon (1 May) to support children's charitable foundation GO Run For Fun.
Ricky, Jamie and Ashley looked bright and cheerful as they warmed up in their pink T-shirts before embarking on a mile run - and there seemed to be no reality show rivalry!
Ashley documented the event and took a group selfie after run, even revealing that Jamie was lagging behind.
Posting a photo to Instagram, she said: "We just ran a mile. Well, @ricky31 and I did, @jamielaing_ couldn't handle it. #gorunforfun."
After the run, the trio continued to cheer on hundreds of children at the Olympic Park.
GO Run For Fun is a charity aimed at encouraging children between the ages of five and 10 to have fun running.
Ricky, Jamie and Ashley aren't the only stars doing their bit, as MIC's Alex Mytton has also been teaching kids his favourite stretches in a bid to encourage them to get active.
Alex, who recently filmed an exercise video for kids while working out in Battersea Park, said: "I caught the running bug early and it's stayed with me throughout my life so far. Running helps me to focus and deal with difficult situations.
"Running is free, it's fun, and you can do it absolutely anywhere."
For more details about GO Run For Fun please click here.