Dragon Challenge, formerly named Dueling Dragons (1999–2010), was a pair of intertwined inverted roller coasters in the Wizarding World of Harry Potter area of Islands of Adventure in Orlando, Florida, United States. Designed by Bolliger & Mabillard of Switzerland, the ride was a dueling roller coaster featuring two tracks – one side was called Chinese Fireball and the other Hungarian Horntail – that were themed as two chasing dragons. Its layout involved two trains sharing adjacent lift hills, with each traversing unique courses. Trains on the Chinese Fireball track reached a maximum speed of 60 mph (97 km/h), while trains on the Hungarian Horntail reached 55 mph (89 km/h). Both tracks featured five inversions and an identical ride duration of 2 minutes and 25 seconds.