TV stars from Love Island, Strictly and Made in Chelsea all turned out to compete in London's half marathon.
All Stars Islander Arabella Chi posed at the start line as she prepared to run for charity in the city's annual race.
"Half marathon day is finally here. I can't lie, I'm slightly nervous, but I'm rested so I feel prepared and the sun is shining.
"There couldn't actually be a better day to it. There's still time to donate to Prostate Cancer - it's a charity really close to my heart.
"My dad and uncle had the cancer, but thanks to early diagnosis, had the surgery which means they still here today."
Arabella joined Strictly's AJ Pritchard and his Love Island brother Curtis at the start line. The trio were on MTV show The Challenge and reunited for the 13 mile run.
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She's already raised £2,300 for the .
Meanwhile Made in Chelsea's Harvey Armstrong celebrated a personal best.
Showing off his race number proudly emblazoned with his beer company name's Prime Time, Harvey said: "Chuffed with that - especially after a few beers."
He's preparing to run a full marathon later this month, also in aid of The Willow Foundation, raising money for seriously ill young adults.
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Harvey said on his page: "Thank you so much for joining me in supporting The Willow Foundation and helping turn my dedication into incredible experiences for those who truly deserve them! I'm thrilled to announce that I'll be tackling my very first marathon.
"It's a journey I'm eagerly anticipating and very excited for. With your backing, I'm aiming for a sub 3.30 Time.
"It's an ambitious goal for a newbie, but I'm ready to embrace the challenge head-on, fuelled by your encouragement and support."
This Morning presenter Dermot O'Leary was also pictured as he got ready to run for Coppafeel.