Children were able to take part in a range of activities including football, hockey, basketball, swingball and tennis while also trying their hand at new sports such as archery, handball and bocce.
Youngsters could also test their skills of balance and coordination on an assault course.
The event was the first of six taking place during the summer holidays to provide fun-filled free entertainment for children and families while at the same time promoting active healthy lifestyles.
Check out these 13 fabulous photographs of children having free, fun in the sun.
The event was the first of six taking place during the summer holidays to provide fun-filled free entertainment for children and families while at the same time promoting active healthy lifestyles.
10. On the ball.
Kim Parkinson, 36, with children Grayson, three, and Ashton, seven, enjoying the sunshine at the Active Sunderland Summer Family Fun event at Herrington Country Park. Photo: Kevin Brady
11. Giant Connect 4.
Dawn Winship with Pheobe, six, and Elliott, three, playing a game of giant Connect 4. Photo: Kevin Brady
12. Balancing act
Leah and Jack Bird on stilts at the Active Sunderland Summer Family Fun Day. Photo: Kevin Brady