Organisers of the 2016 Jersey Marathon have disqualified the Russian winner of the race after he competed in contravention of a global ban on athletes from his country.
Aleksey Troshkin won the event for the third straight year earlier this month.
But following allegations of state-sponsored doping, the IAAF had banned all Russian athletes from competing outside of their homeland.
Runner-up Chris Zablocki of the USA has been declared the new winner.
The IAAF told the BBC earlier this week that they would investigate the outcome of the race following concerns that Troshkin had breached the ban.
"Following further clarifications with the IAAF, the Jersey Marathon has informed Aleksey Troshkin that his result from the 2016 Jersey Marathon must be annulled due to his ineligibility to compete under the rules applicable to the event," organisers 3D Events said in a statement.
"Prize monies, which have yet to be disbursed, will be allocated in accordance with the revised results.
"We would like to thank the IAAF and UK Athletics for their guidance and support on this matter."