Canada's Wonderland announced Behemoth on August 27, 2007, at an estimated cost of C$26 million (Canadian currency). Construction on the ride began shortly after the announcement and was completed on January 22, 2008. Behemoth held a media day on April 24, 2008, followed by an Annual Passholders preview night the following day. Behemoth officially opened to the public on May 4, 2008.
The ride begins when the train makes a right turn out of the station and begins to slowly ascend the chain lift hill. The train then speeds down the 215-foot drop at 78mph (125km) in 3.9 seconds. The train then banks to the right and climbs the first airtime hill, followed by the descent. Then, the train enters a hairpin 180-degree left-hand hammerhead turn. The train then descends from the turn and and travels over three airtime hills. After exiting the third airtime hill, the train climbs up into the mid-course brake run. The train turns right and descends into a 540-degree helix. Following is an upwards 270-degree helix to the left, before descending slightly and entering a final hill before entering the terminal brake run. After the train is cleared to reenter the station, the train proceeds forward into a 180-degree left turn and reenters the station.
Behemoth was the tallest and fastest Canadian roller coaster at the time of its opening. These records were succeeded in May 2012 when Leviathan opened. It is currently the second tallest and fastest Canadian roller coaster.
Coincidentally, Leviathan also operates at Canada's Wonderland, but on the opposite side of Behemoth.
The attraction, at a cost of $26 million in Canadian money, is one of the biggest single investments in Canada's Wonderland's 27-year history.