Can the flash walk through walls?
John Hall
Updated on May 07, 2026
The Flash may be a solid human being who can't walk through walls, but he can use his super speed to pass through objects, or vice versa. When The Flash vibrates quickly enough, he vibrates on a molecular level, which allows him to phase through solid objects.
Can The Flash phase through stuff?
Since his days as Kid Flash, he had the ability to vibrate his molecules fast enough to phase through matter, but not fast enough to do it flawlessly. Whenever Wally phased, the objects he would pass through would explode.How does Flash run up walls?
"We run because of friction," he said. More specifically, "the friction force ... is the weight of an object pressing against the surface of the ground." Friction plants our feet firmly on the ground, giving our muscles something to push off from.Can a human run like The Flash?
Going up against the FlashThe bottom line is that if any human ever tried to match The Flash for speed, it wouldn't end well. Quite simply our body is not built for that sort of speed. Ten metres per second is the fastest you can travel when freefalling using only gravity and this is known as 1G.