How far away is the nearest star besides the sun?

The nearest star to Earth besides the sun is Proxima Centauri, located about 4.24 light-years away. In more concrete terms, that's roughly 25 trillion miles or 40 trillion kilometers. It's part of the Alpha Centauri star system. Even at the speed of light, it would take over four years to reach it, and with current spacecraft technology, the journey would take tens of thousands of years.