How is the time of each individual participant in marathons counted?

How is the time of each individual participant in marathons counted?

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answers (2)

Answer 1
August, 2021

I'll add to the previous answer. In addition to the start and finish, chip readers are located every 5 km along the entire distance. If any number does not cross it, the result will not be counted.

Answer 2
August, 2021

Each participant of the marathon is given a start number, this number has a chip that records the time of each runner. The time starts counting from the moment of crossing the start (therefore it does not matter in what order the athletes start) and after crossing the finish, the sensor records the time when the chip crossed the line.

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