Choi Yun-chil, South Korean long-distance runner and a two-time national champion in the marathon (died 2020)

Choi Yun-chil was a South Korean long-distance runner who was a two-time Olympian and a two-time national champion in the marathon.

July 19 is the 200th day of the year in the Gregorian calendar; 165 days remain until the end of the year.

The marathon is a long-distance foot race with a distance of 42.195 kilometres, usually run as a road race, but the distance can be covered on trail routes. The marathon can be completed by running or with a run/walk strategy. There are also wheelchair divisions. More than 800 marathons are held worldwide each year, with the vast majority of competitors being recreational athletes, as larger marathons can have tens of thousands of participants.