The Rimrock Auto Arena at MetraPark is a multipurpose venue in Billings, Montana. It has a seating capacity of 12,000 spectators and is used for various events and gatherings.

The Rimroack Auto Arena at MetraPark was completed in 1975. It was originally called the METRA which stood for Montana Entertainment, Trade and Recreation Arena. It was later renamed as the MetraPark Arena, with the surrounding area being known as the MetraPark. In 2007, the naming rights were bought by the Rimrock Auto Group, thus the current name.

In 2010, it was hit by a tornado. It was damaged largely and was renovated and remodeled. It was reopened on April 2011 with Elton John playing the first concert after its reopening.