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Hydra The Revenge

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Enjoy the ride!
roller coaster
Hydra The Revenge
Hydra The Revenge barrel roll.jpg
Dorney Park
Location Allentown, Pennsylvania, USA
Status Operating since May 7, 2005
Cost $13,000,000 USD
Height restriction 54 inches (137 cm)
Manufacturer Bolliger & Mabillard
Type Steel - Floorless
Riders per train 32
Hourly capacity 1,245
Propulsion Chain lift hill
Height95 feet
Drop105 feet
Top speed53 mph
Length3,198 feet
Steepest drop68°
Help - Infobox 3
Hydra logo.png

Hydra The Revenge is a Bolliger & Mabillard floorless roller coaster located at Dorney Park in Allentown, Pennsylvania, USA. The ride features a Barrel Roll (Or, "Jo-Jo Roll") right out of the station and unlike most other roller coasters built by Bolliger & Mabillard, it has no predrop after the lift.



The coaster is named in honor of the wooden coaster it replaced, Hercules. It is interesting that Hydra replaced Hercules while in Greek mythology, Hercules conquered the Hydra.


  • Many coaster enthusiasts debate whether Hydra has 6 or 7 inversions, as some say the dive loop does not completely invert riders
  • Hydra features the world's first and only on-ride camera that photographs riders while upside-down. The camera is located in the Heartline roll.