Jono & Dano are launching TV1's Giddy-Up! The Seinfeld Marathon with a free party, including live performances by Aussie rock legend Richard Clapton, and '80s chart toppers, 1927.

Running over the long weekend, Giddy-Up! The Seinfeld Marathon will see episodes from the legendary sitcom air back to back on TV1, and on The Entertainment Quarter's outside screen from 6pm on Friday 11 June.

Broadcasting live on The Jono & Dano Show, the launch party will offer guests Seinfeld-inspired food, including giant pretzels, American style hotdogs and a homage to the infamous Soup Nazi.

With live music, plenty of trivia, heaps of prize giveaways and an abundance of entertainment from Jono & Dano, this is one party that is not to be missed.

Guests must be over 18 years old.

Jono & Dano can be caught on-air Monday to Friday on The Jono & Dano Show, 4pm to 7pm on WS-FM (Sydney) as well as on a network of regional stations.