All parts of the electromagnetic spectrum travel at the speed of light. The equation that defines the relationship of the electromagnetic spectrum is as follows: c (speed of light) = wavelength x frequency. The ultraviolet spectrum ranges from about 190 nanometers (190 E-9 m) to about 400 nanometers which is the approximate wavelength of visible light. Since the speed of light is constant (in a vacuum) and the wavelengths change, that means the frequency also change. As the wavelengths chance, the amount of energy carried by the light also changes. This is a function of the light’s frequency.
In summary, ultraviolet light moves at the same speed as visible light. It also travels as the same speed of infrared light, radio waves, microwaves, x-rays, and gamma rays.