599-JJ-2021-03 is a specific part of Marathon, a racing event. It is composed of a total distance of 26.2 miles, and consists of five stages. The first stage is a 5K run/walk, followed by a 10K, Half Marathon, and Marathon with a final stage being a gruelling Ultra Marathon. Each of the five stages are timed and recorded, the overall time being reported at the end of the event. Additionally, the times for each stage can be used to determine an individual's ranking for the event.