Master Trainer Quests

Master Trainer Quests are quests that involve the player becoming a master in either a major or minor skill. If one of your skills is at 70 or higher, a lower level trainer will direct you to one of the masters, who will kick you skill up to 100 points. These masters are spread across Cyrodiil, in the wilderness and in the cities. All you have to do show the master the extent of your skill, and they will give you the master training.

Acrobatics
The master of acrobatics is a Nord named Tolbern. He resides at Aerin's Camp, one of the few non-hostile camps in Cyrodiil. It is located in the northern foothills of the Valus Mountain range, to the north of Cheydinhal. Once you get to him, simply ask him about "Training" and you're done. This is by far the easiest master trainer quest of them all, because no show of skill is requiered to become a master.