The nearest star to our solar system is Proxima Centauri, which is part of the triple star system known as Alpha Centauri. Proxima Centauri is located about 4.24 light-years away from Earth.
If we were able to travel at the speed of light, it would take approximately 4.24 years to reach Proxima Centauri. However, it's important to note that this is a theoretical scenario, as our current technology does not allow us to travel at such speeds. The speed of light is approximately 299,792 kilometers per second (or about 186,282 miles per second), which is an extremely high velocity.