The highest speed achieved by a man-made object thus far is the speed of the Voyager 1 spacecraft, which is approximately 17 kilometers per second (about 38,000 miles per hour). At this speed, it would take the Voyager 1 spacecraft approximately 17,000 years to travel one light-year.
To put it into perspective, a light-year is the distance that light travels in one year, which is about 9.46 trillion kilometers (5.88 trillion miles). Traveling at the speed of light, which is approximately 299,792 kilometers per second (about 186,282 miles per second), it would take light itself one year to traverse a distance of one light-year.
Keep in mind that the speed of light is considered the ultimate speed limit in the universe according to our current scientific understanding. Achieving or surpassing this speed with man-made objects is not currently feasible with our current technology.