Professor Zoom could run at Class 3000 speed, roughly equivalent to the speed of light. His enhanced endurance allows him to maintain this speed for an extended period.
Physics * Biochemistry
Electronics * History
The Secrety Society of Super-Villains
Physicist Dr. Walter Drake devised a "time satellite" that he could send into the future, and the second Flash donated one of his costumes to be put into the satellite. The time satellite arrived in the 25th Century, where the criminal Eobard Thawne got hold of the Flash costume within it. Thawne amplified the super-speed wave patterns in the costume so as to give himself the power to move at super-speed when he wore it. Dubbed "the Professor" for his scientific talent, Thawne now changed his nickname to "Professor Zoom." Since Thawne planned to use his powers to commit crimes, not to stop them as The Flash did, he reversed the colors on the costume and called himself "the Reverse-Flash." Arriving in the 25th Century, The Flash defeated Zoom.
Zoom first came to the 20th Century to force Mr. Element to help him gain the power of super-speed again. Later, Zoom gave his own body the power of super-speed through his "ultra-speed" science.
Zoom trapped The Flash in the 25th Century and came to the 20th, where he temporarily gave himself the physical appearance of Barry Allen, The Flash's alter ego. Zoom intended to take over the roles of both Barry Allen and The Flash and even to marry Allen's fiancee, Iris West. However, The Flash broke free of Zoom's trap, again defeated Zoom, and married Iris himself.
Later, Zoom apparently became dependent on wearing a special costume to activate his super-speed power. Obsessed with Iris, he again impersonated Allen and tried to kill Iris when she discovered his imposture. The Flash thwarted Zoom once more, but Zoom later returned and demanded that Iris forsake The Flash for him. When Iris refused, Zoom murdered her. (However, Iris had been born in the 30th Century, and her parents transplanted her spirit into the body of a 30th-Century woman, as the Flash discovered years after Iris's "murder.") The vengeful Flash battled Zoom, who became trapped in another dimension.
Thinking Iris dead, Barry Allen fell in love with a young woman named Fiona Webb. But Zoom escaped and tried to murder her on the very day she was to marry Allen. In saving her life, The Flash broke Zoom's neck, killing him.