The duration of Train - film - is 1.57 hours.
The duration of Green Dragon - film - is 1.92 hours.
The duration of Dragon Storm - film - is 1.6 hours.
The duration of The Reluctant Dragon - film - is 1.23 hours.
The duration of Legend of the Dragon - film - is 1.6 hours.
The duration of Son of the Dragon - film - is 2.9 hours.
The duration of Blood of the Dragon - film - is 1.6 hours.
The duration of Mystery Train - film - is 1.88 hours.
The duration of Train to Pakistan - film - is 1.8 hours.
The duration of The Mystery Train - film - is 1.03 hours.
The duration of Double Indemnity - film - is 1.78 hours.
Its not a sequel or a film...its just a short film that is in the DVD and Blue-Ray of How to Train Your Dragon.