The question is incompletely posed.

"the faster you travel" is a meaningless phrase unless a frame of reference is defined; indeed, the absence of a universal frame, and the invalidity of that phrase, is the core concept of the Relativity theory.

Also, the rotational speed of the Earth's surface (relative to the center) depends on latitude.

Taking Dubai as a sample location, the slowdown is about 3 times as great as the speedup.

David