We're taking part in this one as GOSH has a special place in our hearts.
Families can walk, run, scoot, jog, ride, wheel, hop etc their way around the 5k family-friendly course in Hyde Park.
After the race, enjoy post-race family activities, including face-painting, a climbing wall, giant games, arts and crafts and more. All funds raised got help seriously ill children from all over the UK who go to Great Ormond Street Hospital (GOSH) for life-changing treatment.
There's no minimum fundraising requirement, but as a guide, they ask each participant to raise £150.
Sign up here.