Viper (Six Flags Great America)

Roller coaster in the United States
Watch the on-ride POV
Six Flags Great America
Location Gurnee, Illinois, USA
Coordinates 42°22′05″N 87°56′14″W / 42.368022°N 87.937130°W / 42.368022; -87.937130
Park section Southwest Territory
Status Operating since April 29, 1995
Rider height 48 inch minimum
Manufacturer Six Flags
Designer / calculations Dennis Starkey
Type Wooden
Track layout Cyclone
Hourly capacity 1000
Propulsion Chain lift hill
Height 100 feet
Drop 80 feet
Top speed 50 mph
Length 3458 feet
Inversions 0
Drop angle 53°
Duration 1:45
G-Force 3.6
Rolling stock
Manufacturer Philadelphia Toboggan Coasters
Riders per train 30

Viper is a wooden roller coaster located at Six Flags Great America in Gurnee, Illinois, USA. Opened in 1995, it is the only roller coaster to be built directly by Six Flags themselves.[citation needed] Viper is a taller, faster and longer mirror image of the famous Coney Island Cyclone. It is a part of the Southwest Territory, along with Raging Bull.


Construction of the attraction began in late 1994. Viper officially opened to guests on April 29, 1995.[1][2]

From July 8, 2013 to August 26, 2013, Viper ran backwards.[3]

At No Coaster Con 2024, the park announced that it would be retracking some of, if not all of, the wooden coaster's track.[4]



The ride is themed to a store that sells Snake Oil Elixir, as can be seen in the queue and station for the ride.


2 trains with 5 cars per train. In each car, riders are arranged 2 across in 3 rows, for a total of 30 riders per train.


Queue line



  1. "Hope that summer won't send in the clouds". The Atlanta Constitution. 1995-04-27. p. 70. Retrieved 2021-05-19.
  2. "It's a scream!". The Tennessean. 1995-04-30. p. 15. Retrieved 2021-05-19.
  3. "Viper Ready to Roll Backwards at Six Flags Great America". NewsPlusNotes.
  4. SFGAm No Coaster Con Recap + 5 Year Plan! (in British English), retrieved 2024-02-06

External links

  • Viper on the Roller Coaster DataBase.

Articles on Six Flags Great America