How Fast Does An Engine Cycle Go?

How Fast Does An Engine Cycle Go? In four stroke engine for every 720 degrees i.e.,2revolutions one combustion cycle happens, where in 2 stroke engines for every 360 degrees i.e.,1 revolution one complete combustion cycle happens happens. And given speed is 7000rpm i.e,7000 revolutions per every minute. How fast is a piston moving? For example,