Lengthened Trot
Dressage Solutions: Understand the Proper Feeling of Lengthening a Horse's Stride
Try this tip from Maryal Barnett.
What Is the Purpose of Posting the Trot on the Outside Diagonal?
Heather Mason answers this reader question, explaining the purpose of posting the trot on the outside diagonal and discussing which hand should carry the dressage whip.
How to Distinguish Between the Various Kinds of Trot in Dressage
Melonie Kessler explains the difference between working, medium, lengthened and extended trot.