Clubhead speed refers to the speed at which the clubhead of a golf club moves just before impact with the ball. It is a crucial factor in determining how far the ball will travel. Higher clubhead speeds generally result in greater distance, as they generate more energy transferred to the ball. Measuring clubhead speed can help golfers improve their performance. It is typically measured in miles per hour (mph) using specialized equipment like radar devices or launch monitors. Understanding and increasing clubhead speed can lead to better shots and overall improvement in a golfer's game.