127th Boston Marathon
The 127th Boston Marathon will take place on Monday, April 17, 2023, featuring nearly 30,000 athletes from more than 100 countries.
Monday, April 17, 2023
As the principal sponsor, John Hancock continues to ensure the stability of the world's oldest annual marathon.
2023 Field Size and Registration Dates
Keep up with the latest news on the B.A.A. and Boston Marathon.
A new policy for deferrals at B.A.A. events