Listing the length of each attraction at Epcot, in minutes:

Epcot Attraction Durations
Attraction Duration
Test Track Presented by Chevrolet 4 minutes
The Seas with Nemo & Friends 4 minutes
Maelstrom 4.5 minutes
Soarin' 5.5 minutes
Journey Into Imagination With Figment 6 minutes
Gran Fiesta Tour Starring The Three Caballeros 7 minutes
Meet Disney Pals at the Epcot Character Spot 10 minutes
JAMMitors 10 minutes
IllumiNations: Reflections of Earth 12 minutes
Living with the Land 14 minutes
Reflections of China 14 minutes
Mission: SPACE Orange 15 minutes
O Canada! 15 minutes
Sum of All Thrills 15 minutes
Matsuriza 15 minutes
Voices of Liberty 15 minutes
Spirit of America Fife & Drum Corps 15 minutes
Mission: SPACE Green 15 minutes
Spaceship Earth 16 minutes
Turtle Talk with Crush 17 minutes
Impressions de France 18 minutes
Captain EO 20 minutes
Sergio 20 minutes
The Jeweled Dragon Acrobats 20 minutes
Serveur Amusant 20 minutes
The Circle of Life 20 minutes
Mo'Rockin 20 minutes
British Revolution 20 minutes
World Showcase Players - United Kingdom 25 minutes
Mariachi Cobre 25 minutes
Viva Mexico 25 minutes
The American Adventure 29 minutes
Agent P's World Showcase Adventure 30 minutes
Off Kilter 30 minutes
Ellen's Energy Adventure 35 minutes
Rose & Crown Pub Musician 45 minutes

Duration of Attractions at Other Parks