Lil' Devil Coaster[1] (formerly Road Runner Railway) is a steel roller coaster located at Six Flags Great Adventure in Jackson Township, New Jersey.

The ride opened in 1999 as Road Runner Railway, but was reintroduced as Lil’ Devil Coaster in 2021.

It was manufactured by Zamperla of Italy and is a small, kiddie coaster located in the Jr. Thrill Seekers section of the park.

[2] After the 2019 season, the ride was temporarily removed due to the upcoming addition of Jersey Devil Coaster.

Later that year, the park re-opened the ride in time for their Fright Fest halloween event.