A huge knowledge on rollercoasters.,corn snakes
Depends on what you mean by biggest.
TALLEST: Kingda Ka at Six Flags Great Adventure (Jackson,Rat Snake or Copperhead How To Tell the Difference, New Jersey).It's 456 feet tall with a 418-foot drop
LONGEST: Steel Dragon 2000 in Japan.It's 8,133 feet long.
There's your answer.
Source(s):
My awesome obsession
Height: Kingda Ka, USA (456 feet tall)
Length: Steel Dragon 2000,the biggest rollercoaster in the world, Japan (8133 feet long)
Expanse: Probably Ultimate, UK (measurement unknown)