BAA's profile picture. The Boston Athletic Association is a non-profit organization with a mission of promoting a healthy lifestyle through sports, especially running.

Boston Athletic Association

@BAA

The Boston Athletic Association is a non-profit organization with a mission of promoting a healthy lifestyle through sports, especially running.

Registration for the 2026 #Boston5K opens on MONDAY @ 10AM ET!🤩🦄 Check out these FAQs for everything you need to know about registration week.➡️ For more information about the Boston 5K, visit baa.org/races/boston-5…

BAA's tweet image. Registration for the 2026 #Boston5K opens on MONDAY @ 10AM ET!🤩🦄 Check out these FAQs for everything you need to know about registration week.➡️

For more information about the Boston 5K, visit baa.org/races/boston-5…
BAA's tweet image. Registration for the 2026 #Boston5K opens on MONDAY @ 10AM ET!🤩🦄 Check out these FAQs for everything you need to know about registration week.➡️

For more information about the Boston 5K, visit baa.org/races/boston-5…
BAA's tweet image. Registration for the 2026 #Boston5K opens on MONDAY @ 10AM ET!🤩🦄 Check out these FAQs for everything you need to know about registration week.➡️

For more information about the Boston 5K, visit baa.org/races/boston-5…

1️⃣ WEEK until registration for the 2026 #Boston5K‼️ REMINDER: Registration for April’s 5K race will occur over four days beginning January 26th, featuring a NEW random selection process. Learn more about this year’s registration process at baa.org/races/boston-5…🦄

BAA's tweet image. 1️⃣ WEEK until registration for the 2026 #Boston5K‼️

REMINDER: Registration for April’s 5K race will occur over four days beginning January 26th, featuring a NEW random selection process.

Learn more about this year’s registration process at baa.org/races/boston-5…🦄

On this day, we honor Dr. Martin Luther King Jr. and his powerful legacy of justice, equality, and unity—values that remind us to keep moving forward, together.💙💛 #MLKDay #MLKJr

BAA's tweet image. On this day, we honor Dr. Martin Luther King Jr. and his powerful legacy of justice, equality, and unity—values that remind us to keep moving forward, together.💙💛 #MLKDay #MLKJr

🚨NEW FOR 2026🚨 Registration for the 2026 #Boston5K will occur over 4️⃣ DAYS in January, featuring a 🆕 random selection process. Registration for the event will open on Monday, January 26 @ 10AM ET, and will close on Thursday, January 29 @ 5PM ET.🦄 🔗 baa.org/races/boston-5…

BAA's tweet image. 🚨NEW FOR 2026🚨 Registration for the 2026 #Boston5K will occur over 4️⃣ DAYS in January, featuring a 🆕 random selection process.

Registration for the event will open on Monday, January 26 @ 10AM ET, and will close on Thursday, January 29 @ 5PM ET.🦄

🔗 baa.org/races/boston-5…
BAA's tweet image. 🚨NEW FOR 2026🚨 Registration for the 2026 #Boston5K will occur over 4️⃣ DAYS in January, featuring a 🆕 random selection process.

Registration for the event will open on Monday, January 26 @ 10AM ET, and will close on Thursday, January 29 @ 5PM ET.🦄

🔗 baa.org/races/boston-5…

Registration for the 2026 @BAA Distance Medley presented by @Honda is officially SOLD OUT in RECORD TIME‼️🦄 DON’T FORGET: Registration for the 2026 Boston 5K will open in 2️⃣ WEEKS on Monday, January 26th @ 10AM ET.🗓️ Stay tuned for more information.👀

BAA's tweet image. Registration for the 2026 @BAA Distance Medley presented by @Honda is officially SOLD OUT in RECORD TIME‼️🦄

DON’T FORGET: Registration for the 2026 Boston 5K will open in 2️⃣ WEEKS on Monday, January 26th @ 10AM ET.🗓️ Stay tuned for more information.👀

GOOD NEWS🗣️ Registration for the 2026 B.A.A. Distance Medley presented by @Honda is OFFICIALLY LIVE‼️🤩 Plan your year of running and register TODAY within Athletes’ Village to secure your spot in the Boston 5K, 10K, and Half!💙💛 🔗 baa.org/races/baa-dist…


🚨FINAL REMINDER🚨 Registration for the 2026 @BAA Distance Medley presented by @Honda will open within Athletes’ Village on Monday, January 12th @ 10AM ET‼️ Take charge of YOUR new year and save the date…😏 Learn more about the B.A.A. Distance Medley at baa.org/races/baa-dist…

BAA's tweet image. 🚨FINAL REMINDER🚨 Registration for the 2026 @BAA Distance Medley presented by @Honda will open within Athletes’ Village on Monday, January 12th @ 10AM ET‼️ Take charge of YOUR new year and save the date…😏

Learn more about the B.A.A. Distance Medley at baa.org/races/baa-dist…

LEVEL UP with the 2026 @BAA Distance Medley presented by @Honda!💪 Registration for this year’s series will open within Athletes’ Village on Monday, January 12th @ 10AM ET.🦄 So be sure to mark your calendars so YOU can plan your year of running!🏃💨 🔗 baa.org/races/baa-dist…


Boston Athletic Association reposted

The @BAA is delighted to share with you our 2024-2025 Impact Report.🦄 This report aims to provide an overview of all that we have accomplished over the last year and we want to thank all of our partners, participants, volunteers, & all involved!💙💛 🔗 bstnmar.org/ImpactReport24…

bostonmarathon's tweet image. The @BAA is delighted to share with you our 2024-2025 Impact Report.🦄

This report aims to provide an overview of all that we have accomplished over the last year and we want to thank all of our partners, participants, volunteers, & all involved!💙💛

🔗 bstnmar.org/ImpactReport24…
bostonmarathon's tweet image. The @BAA is delighted to share with you our 2024-2025 Impact Report.🦄

This report aims to provide an overview of all that we have accomplished over the last year and we want to thank all of our partners, participants, volunteers, & all involved!💙💛

🔗 bstnmar.org/ImpactReport24…
bostonmarathon's tweet image. The @BAA is delighted to share with you our 2024-2025 Impact Report.🦄

This report aims to provide an overview of all that we have accomplished over the last year and we want to thank all of our partners, participants, volunteers, & all involved!💙💛

🔗 bstnmar.org/ImpactReport24…
bostonmarathon's tweet image. The @BAA is delighted to share with you our 2024-2025 Impact Report.🦄

This report aims to provide an overview of all that we have accomplished over the last year and we want to thank all of our partners, participants, volunteers, & all involved!💙💛

🔗 bstnmar.org/ImpactReport24…

May the principles of Kwanzaa guide the season with light and togetherness. Warmest wishes from #TeamBAA for a joyful celebration!✨ #HappyKwanzaa

BAA's tweet image. May the principles of Kwanzaa guide the season with light and togetherness. Warmest wishes from #TeamBAA for a joyful celebration!✨ #HappyKwanzaa

Sending heartfelt Christmas wishes to our #BostonMarathon community near and far. May your day be merry and bright!🎄🦄✨ #MerryChristmas

BAA's tweet image. Sending heartfelt Christmas wishes to our #BostonMarathon community near and far. May your day be merry and bright!🎄🦄✨ #MerryChristmas

Kicking off the week with some motivation from this year's #BostonHalf spectators!🗣️💙💛 #MotivationMonday

BAA's tweet image. Kicking off the week with some motivation from this year's #BostonHalf spectators!🗣️💙💛 #MotivationMonday
BAA's tweet image. Kicking off the week with some motivation from this year's #BostonHalf spectators!🗣️💙💛 #MotivationMonday
BAA's tweet image. Kicking off the week with some motivation from this year's #BostonHalf spectators!🗣️💙💛 #MotivationMonday
BAA's tweet image. Kicking off the week with some motivation from this year's #BostonHalf spectators!🗣️💙💛 #MotivationMonday

Mood because we're already halfway through the week!👯‍♀️🦄 #BostonHalf

BAA's tweet image. Mood because we're already halfway through the week!👯‍♀️🦄 #BostonHalf
BAA's tweet image. Mood because we're already halfway through the week!👯‍♀️🦄 #BostonHalf
BAA's tweet image. Mood because we're already halfway through the week!👯‍♀️🦄 #BostonHalf

The B.A.A. mourns the passing of Dr. John “Vinny” Coyle, a longtime Boston Athletic Association member, Governor, & President from 2000 to 2003. Dr. Coyle’s kindness, legacy, and contributions will live on, and our thoughts are with his family and close friends.

BAA's tweet image. The B.A.A. mourns the passing of Dr. John “Vinny” Coyle, a longtime Boston Athletic Association member, Governor, & President from 2000 to 2003. Dr. Coyle’s kindness, legacy, and contributions will live on, and our thoughts are with his family and close friends.

Wishing all who celebrate a Hanukkah filled with warmth, light, and peace.💙💛 May each of these eight nights be filled with love, light, and tradition.✨ #HappyHanukkah

BAA's tweet image. Wishing all who celebrate a Hanukkah filled with warmth, light, and peace.💙💛 May each of these eight nights be filled with love, light, and tradition.✨ #HappyHanukkah

TEAM DANA-FARBER RAISED $1,057,081.13 TO DEFY CANCER‼️ This is the HIGHEST TOTAL in the history of our Boston Half partnership!💙💛 CONGRATULATIONS TO TEAM @DanaFarber!👏🦄

BAA's tweet image. TEAM DANA-FARBER RAISED $1,057,081.13 TO DEFY CANCER‼️ This is the HIGHEST TOTAL in the history of our Boston Half partnership!💙💛

CONGRATULATIONS TO TEAM @DanaFarber!👏🦄

#BostonHalf 🤝 DC Comics 📸 Kevin Morris

BAA's tweet image. #BostonHalf 🤝 DC Comics

📸 Kevin Morris
BAA's tweet image. #BostonHalf 🤝 DC Comics

📸 Kevin Morris
BAA's tweet image. #BostonHalf 🤝 DC Comics

📸 Kevin Morris

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