How long would it take to travel at the speed of light from one side of the milky way galaxy to the other?

The Milky Way galaxy is about 100,000 light-years in diameter. Therefore, if you could travel at the speed of light, it would take approximately 100,000 years to traverse from one side of the galaxy to the other. However, this is a theoretical scenario, as traveling at the speed of light is not currently possible according to our understanding of physics.