Chip timing is a method used in races to accurately record participants' finish times. Each runner is given a small electronic chip, usually attached to their shoe or bib. When they cross the start and finish lines, the chip sends a signal to timing mats that track their time. This technology allows for precise timing, even in large events with many participants. It helps ensure that every runner's performance is recorded accurately, providing reliable results for both the athletes and event organizers. Chip timing has become a standard practice in various races, including marathons and triathlons.