Hundreds of children and their families are expected to descend on Astley Park on Wednesday for the annual Playtime In The Park.
There will be free activities from 11am to 3pm, particularly aimed at families with children aged under 11, including amusement rides, arts and crafts, donkey rides, giant games and a Punch and Judy show.
The event is hosted by Chorley Council in partnership with Home Start and Chorley children’s centres.
Coun Peter Wilson, deputy council leader, said: “Playtime In The Park is the perfect opportunity for families to enjoy a fun day out with a whole host of activities for them to get involved with, all for free.
“The event is becoming more popular each year.”