According to the theory of relativity, it is not possible for an object with mass to travel at the speed of light (299,792,458 meters per second in a vacuum). As an object with mass accelerates closer to the speed of light, its relativistic mass increases, requiring an infinite amount of energy to reach the exact speed of light.
However, if we consider a thought experiment where an object with massless particles, such as a photon, is traveling at the speed of light, then its speed would be equal to the speed of light. Photons are particles of light that travel at the maximum possible speed in the universe.
It's important to note that traveling at the speed of light is currently beyond our technological capabilities, and the theory of relativity governs the behavior of objects moving at speeds close to but less than the speed of light.