全米陸上競技連盟によれば、全米トップ10の半数の選手は競技年収が1万5000ドル（約160万円）未満。競技年収には賞金に助成金やスポンサー収入も含める。

A survey by the U.S. Track & Field Athletes Association showed that approximately 50 percent of athletes who rank in the top 10 in the United States make less than $15,000 annually from sponsorships, grant and prize money.
https://www.reuters.com/article/athletics-corruption-funding-idINKCN0T028S20151111
https://wired.jp/2016/08/15/money-olympian/?site=pc%3Ca%20href%3D