Annual Boston race; Patriots' Day tradition since 1897
Peres Jepchirchir has been provisionally suspended after an out-of-competition sample collected in Kenya returned an adverse analytical finding for EPO. The Athletics Integrity Unit has opened an investigation; Jepchirchir’s Sydney Marathon win in August was affected. Kenya’s distance-running programme is facing intensified scrutiny ahead of the 2029 world championships in Nairobi.