BOSTON (AP) — The Boston Marathon will retire Bib No. 261 in honor of Kathrine Switzer.

The Boston Athletic Association said Thursday it will no longer assign the number that Switzer wore in 1967 when she became the first woman to officially enter the race.

Switzer was given a number for the men’s-only race in 1967 only because she used her initials — ‘‘K.V.’’ — when she filled out her entry forms. A race official tried to push her off the course, tearing a corner from her bib.