Runaway Mountain, Steel roller coaster in Six Flags Over Texas, Arlington, US.

Runaway Mountain is an indoor steel coaster at Six Flags Over Texas with black track and support structure. The ride reaches speeds of about 40 miles per hour and guides passengers through multiple helical sections and sharp turns in complete darkness.

Runaway Mountain opened in 1996 as Premier Rides' first installation at Six Flags Over Texas. The ride is a steel coaster enclosed inside a 20-metre-tall artificial mountain, and its layout runs entirely in the dark. The mining theme shaped the design concept from the start.

Runaway Mountain is housed inside a 20-metre-tall artificial mountain, and the track runs in darkness. The ride opened in 1996 as Premier Rides' first installation at Six Flags Over Texas. Its name and setting borrow from the runaway mine train idea already used by the park's 1966 Runaway Mine Train coaster.

Visitors should verify the height requirement before boarding, as it applies to this ride. Each train holds about 36 passengers across three cars, so wait times can vary throughout the day.

Runaway Mountain is a seated steel coaster enclosed inside a 20-metre-high artificial mountain, and the entire circuit runs in the dark. The structure hides the track from outside view, so riders cannot see the layout before boarding.