competitors in next years boston marathon must provide proof of a covid19 vaccine organisers said on tuesday adding to a growing list of major sport events where inoculation is mandatory for participationthe race the worlds oldest annual marathon will return to its usual april date after pushing the 2021 edition to october due to the pandemic and will allow a field of 30000 after capping the participants to 20000 this yearthe race did not take place in 2020 due to the pandemicwe had a 93 vaccination rate among our 125th boston marathon participants and want to do our part to continue to mitigate the spread of covid19 as we continue our return to racing boston athletic association president and ceo tom grilk said in a statementparticipants in last months race were required to show proof of a vaccine or a negative test similar to the restrictions in place for sundays new york city marathonthe 2022 boston marathon will take place on april 18