Kristina Timanovskaya wrote on social media that she had been "kidnapped" by her own leaders to be sent back to Belarus.
The incident occurred after the 24-year-old spoke negatively about his coaches.
- Some of our girls did not go here for the relay because they had not been doped tested enough times.
And the coach put me on the team without my knowledge.
That's what I was talking about, and then the coach came to me and said that there had been orders from above to remove me, she said in an interview with Reuters.
Timanovskaya refused to board the plane and sought refuge with Japanese police at the airport.
Polish Foreign Minister Marcin Przydacz then confirmed that she had received a humanitarian visa in the country.
Last Thursday, she landed in the Polish capital Warsaw.
Now she wants to support other vulnerable athletes in Belarus by auctioning off her relay silver from the home European Championships 2019. The money will go to a Belarusian association that works to provide support to athletes who have been neglected or imprisoned for their political views, and who have " suffered from the actions of Lukashenko's regime ”.
Bidding has already risen above 5,000 dollars, about 43,000 kronor.
Alexander Lukashenko has been President of Belarus since 1994 and was re-elected in August last year.
The validity of the election result was questioned and major protests broke out.
Since then, the regime has imprisoned both protesters and several political opponents.