The Boston Athletic Association announced last week that entrants in the 125th Boston Marathon will need to provide proof of vaccination or produce a negative COVID-19 test in order to participate in the Oct. 11 race.

When individuals go to pick up their bib between Oct. 8-10 at a facility next to the Boston Marathon Expo, they will be required to show proof of a complete series of a World Health Organization-certified vaccine, or they must produce a negative COVID-19 test, which will be administered on site.

Those who are vaccinated or test negative will receive a bracelet that they must wear at all times in order to obtain their bib, access race transportation and receive their finisher’s medal after the race.

The BAA, which “strongly recommended” that all entrants as well as staff and volunteers get vaccinated, will not require masks during the race but will mandate them on participant transportation and “in other areas in accordance with local guidelines.”

The BAA announced in the spring that the field would be limited to 20,000, and that it would eliminate the staging area (Athletes Village) behind Hopkinton High School. Instead, there will be a rolling start, where participants are assigned specific start times and are transported to Hopkinton to align with the designated time.