Retired greyhound returns to the tracks as mascot for 5k charity run The 5k fun run in Darlington's South Park is being held in aid of the charity 4Louis, which helps bereaved parents Frank pictured at the starting point of the run (Image: North News & Pictures Ltd nort) Get the latest news from Darlington direct to your inbox with our free email newsletterInvalid EmailSomething went wrong, please try again later. Subscribe We use your sign-up to provide content in ways you've consented to and to improve our understanding of you. This may include adverts from us and 3rd parties based on our understanding. You can unsubscribe at any time.More info