The eighth South American Youth Championships in Athletics were held in Comodoro Rivadavia, Argentina, from October 17–19, 1986.

Medal winners are published for boys[1] and girls.

[2] Complete results can be found on the "World Junior Athletics History" website.

[3] *   Host nation (Argentina) Detailed result lists can be found on the "World Junior Athletics History" website.

[3] An unofficial count yields the number of about 205 athletes from about 9 countries: