Eristas is an M-class planet located in the Alpha Quadrant. Early in humanity's exploration of the galaxy, a group of Masai from Earth colonized Eristas. Living on its vast deserts and expansive plains, they developed a culture where speed and velocity attained a nearly religious significance, and most of the Eristan Masai took their names from that tradition.
Moves-With-Burning-Grace was an Eristan who served as chief engineer aboard the USS Enterprise under Captain Christopher Pike in the mid-23rd century. (Star Trek: Early Voyages)
Strikes-With-Lightning-Speed and Dances-Like-Sunset-Wind were two Eristans who served in Starfleet during the late 24th century. (Star Trek: Pendragon)