Listing the length of each attraction at Universal's Islands of Adventure, in minutes:

Universal's Islands of Adventure Attraction Durations
Attraction Duration
Hogwarts Express Arrival 0 minutes
Pteranodon Flyers 1 minutes
Caro-Seuss-el 2 minutes
Doctor Doom's Fearfall 2 minutes
Flight of the Hippogriff 3 minutes
Raptor Encounter 3 minutes
The Incredible Hulk Coaster 4 minutes
One Fish, Two Fish, Red Fish, Blue Fish 4 minutes
Storm Force Accelatron 4 minutes
Hogwarts Express - Hogsmeade Station 5 minutes
Hogwarts Express - Return Trip to Hogsmeade 5 minutes
The Nighttime Lights at Hogwarts Castle 5 minutes
The Cat in the Hat 6 minutes
Harry Potter and the Forbidden Journey 6 minutes
The High in the Sky Seuss Trolley Train Ride! 6 minutes
Skull Island: Reign of Kong 6 minutes
Triwizard Spirit Rally 6 minutes
The Amazing Adventures of Spider-Man 7 minutes
Dudley Do-Right's Ripsaw Falls 7 minutes
Ollivanders 7 minutes
Popeye & Bluto's Bilge-Rat Barges 7 minutes
The Mystic Fountain 8 minutes
Jurassic Park River Adventure 9 minutes
The Magic of Christmas at Hogwarts Castle 9 minutes
Oh! The Stories You'll Hear! 9 minutes
Frog Choir 10 minutes
If I Ran the Zoo 15 minutes
Jurassic Park Discovery Center 15 minutes
Marvel Super Hero Island Arcade 15 minutes
Me Ship, The Olive 15 minutes
Camp Jurassic 20 minutes
Poseidon's Fury 25 minutes
Grinchmas Who-liday Spectacular 30 minutes

Duration of Attractions at Other Parks