Michael Johnson won gold medals at the 1992, 1996 and 2000 Olympics

Four-time Olympic champion Michael Johnson has confirmed he will refund a sum of $500,000 (£375,000) he allegedly "secretly" paid himself just days before his Grand Slam Track (GST) league collapsed.

Three GST events were held - in Kingston, Miami and Philadelphia - before the project folded in December 2025.

Contracted runners had been promised lucrative prize money and salaries in the competition's inaugural season, but the final event was cancelled and organisers later voluntarily filed for bankruptcy in the US.

A legal filing in Delaware by vendors claiming against Johnson and GST includes an accusation that eight days before the collapse, he "secretly" paid himself $500,000 (£375,000). GST called that accusation "unfounded and false".