Two years ago Shobukhova was banned from the sport after her biological passport showed "abnormal haematological curves".

Along with a two-year suspension, Shobukhova was also stripped of her win at the 2010 London Marathon and victories at the Chicago Marathon in 2009, 2010 and 2011.

Shobukhova's prize money included a $1 million (£650,000/€900,000) bonus as winner of the World Marathon Majors Series in 2009-2010.

The London Marathon launched legal proceedings last year against Shobukhova in a court in the United Kingdom to try to regain some of the money. 

Shobukhova's ban officially ended last August but she has abandoned plans to return to marathon running.

"I have made a personal decision to wrap up with my sports career," the 38-year-old Shobukhova told Russian news agency TASS.

"I have been coaching children since January and have no intentions now of coming back."

Shobukhova  added: "I have been long waiting for my suspension term to expire.

"When it [the ban term] expired some sort of a devastation feeling settled in.

"I cannot say that I became tired of sports.

"What I simply need now is stability and I decided to work as a coach."

In December 2014 it had been reported that she had paid $550,000 (£380,000/€500,000) to cover up positive doping results.

Shobukhova had her ban extended to three years two months by the International Association of Athletics Federations (IAAF) but the World Anti-Doping Agency granted her a reduction of seven months.

It followed her providing information to the Independent Commission chaired by Canadian lawyer Richard Pound which led to Russia being banned by the IAAF from international competition. 

Before her results were erased following her positive drugs test, Shobukhova's personal best of 2 hours 18min 20sec made her the second fastest female marathon runner in history behind Britain's Paula Radcliffe.