Madeleine McCann's parents have completed a 10 kilometre run in aid of a missing people's charity.
The were joined by hundreds of families and friends of other missing people.
Kate McCann, whose daughter vanished while on a family holiday in Portugal almost four years ago, said: "We are running this year to remember our Madeleine and all children who are missing."
She continued: "We hope and pray that they come home safely.
"We are very glad to be supporting the charity Missing People once more and helping them continue to be a lifeline when someone disappears."
The pair were joined by others in London's Regent's Park including Peter Lawrence, father of missing York chef Claudia Lawrence and Rachel Elias, sister of rock star Richey Edwards, rhythm guitarist and co-lyricist of the Manic Street Preachers.
Mrs McCann applauded the charity for the help and key advice it provides when the state cannot.
She said burglary victims might get help from the state, but added: "If your child goes missing or a family member goes missing sometimes you might not get anything."
Her husband Gerry said families of the missing provided a support network for one another and played a part in helping each other recover.
He said: "Although you don't think you could ever carry on, actually, eventually you start to get some normality."