Highway 18 is an American reality television game show that premiered on Golf Channel on July 22, 2008, after being filmed in April 2008.
[2][3] The show features five teams of twosomes racing against each other in a series of challenges to complete a "Clubhouse Challenge" allowing them to move to the next round, in a format based on The Amazing Race.
[4] The show airs Tuesday nights at 10pm on Golf Channel.
On arriving, they will have a challenge that will test one part of their golf game.
Once the hole is completed, they must rush back to the Clubhouse and retrieve a golf ball.