The Bad Boys II beauty pounded the pavements for the Susan G. Komen Race for the Cure event to raise money in honour of a late pal who lost her battle with breast cancer.
In a Twitter.com post before the race, she wrote, "Beautiful morning in DC! So proud 2 be a part of the GlobalRace & an Ambassador for @KomenfortheCure. I'm here in memory of my friend Kristen Martinez".
Union crossed the finish line at the end of 3.1-mile (4.98-kilometre) course in 41 minutes and posted a photo of herself completing the run on her Twitter page.
The actor's sister is a breast cancer survivor and he's happy to be doing his bit for the Susan G. Komen Race For The Cure fund.
He says, "It's fantastic. Obviously breast cancer affects a lot of women in America. I have a sister who's a survivor. People uniting together and raising money and awareness this way is hugely important and it seems right on with Motherhood.
"It's not a gimmick. It's a real thing and we can celebrate motherhood and the challenges that go right along with it so I think Fandango stepping up and Susan Komen being the benefactor is fantastic."
It's not the only fundraising Edwards will be doing this autumn (09) - he's also running the New York Marathon on 1 November (09) for an organisation called Shoe For Africa.
He explains, "The big project in my life right now is raising money to build the first public children's hospital in Kenya through an organisation called Shoe For Africa.
"We use running as a medium to bring women together and empower women in Africa to run for health initiatives and AIDS education.
"I'm running on November 1st with 30 people to raise awareness and funds."
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