The post you quoted demonstrates clearly it is not.
Again, it’s not a question of the intrinsic act, it’s a question of the degree to which the act becomes impossible to a normal human.
Running is mundane. Running 21mph is Olympic level athleticism, but still mundane. Running 30mph is faster than any known human has ever run, but could still be considered mundane. Heroic, but not necessarily superhuman. 40MPH and we’re getting into the realms of fantasy…but at just “twice as fast as a fast runner”, it’s arguably still merely “heroic”
Running 200mph unassisted
is not mundane. (At least, not for a human.)