DC Universe Codexery

Cosmic Treadmill

A machine for running through time.

The Cosmic Treadmill is a device used by Barry Allen, the Flash, to travel through time. It is a piece of equipment that allows for precise navigation of the timestream, complementing a speedster's natural ability to vibrate through eras. The treadmill is often depicted as a futuristic exercise machine, and its use is a key element in several of Barry Allen's classic stories.

Quick Facts

Primary user
Barry Allen (The Flash)
Function
Time Travel via Speed Force Manipulation

Facts from the source article.

Background

It was later used in the landmark storyline "The Trial of The Flash" (1983–1984), detailed in The Flash #323–350, which concluded with Barry's retirement and moving to the future with Iris. The device is also central to the crossover event Flashpoint (2011), where Barry's actions using the treadmill create an alternate timeline, leading to The New 52 reboot. In Crisis on Infinite Earths (1985–1986), Barry Allen sacrifices himself to save the Multiverse, an event that involved time travel and the Cosmic Treadmill.

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