A Pace Calculator is a tool used by runners, cyclists, and other athletes to determine their pace during a workout or race. It helps users find out how long it will take to complete a certain distance based on their current speed or how fast they need to go to finish within a specific time. These calculators can be found online or as mobile apps, making them easily accessible. Users typically input their distance and either their time or pace, and the calculator provides the missing information. This can aid in training and goal-setting for events like marathons or triathlons.