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Boston Marathon 2025 –100 Days
About
With the spring marathons in sight, the build toward race day has begun. Our 100 Days training program returns to Boston – an opportunity to embrace and celebrate the hard work required for the journey to 26.2 miles, featuring a series of paced long runs with the Tracksmith community designed to prepare you for race day. We aim to support your every effort as we stride closer to the starting line, offering coaching, route support, and insider discussions that will bolster your build to the marathon.
Register
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Registration Closed100 Days To Boston Kickoff: Week 1FreeSunday, January 12, 20259:00 AMJoin us for our first run of 100 Days. This week, we'll run 12 miles around the Charles River. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closed100 Days to Boston: Week 2FreeSunday, January 19, 20259:00 AMJoin us for the second run in our build to Boston. This week, we revisit the "Half on the Half": an out-and-back half marathon on the Boston course. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closed100 Days to Boston: Bus Run #1 (BUS TICKET)$5Sunday, January 26, 20258:20 AMThis ticket is to solely reserve your spot on the bus to leave from the Trackhouse. If you do not want a bus ticket and want to meet at the drop-off location, please reserve the free ticket and check the event card for the exact meet point for the run start. Join us for the third run in our build to Boston. This week, we embark on our first bus run of the program. Doors will open at 8:00 AM, we will begin bus loading at 8:20 AM, and the buses will depart at 8:30 AM. Bag drop is available at the Trackhouse pre-run; no items may be left on the buses. The run is 14 miles back to the Trackhouse.
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Registration Closed100 Days to Boston: Bus Run #1 (MEET POINT TICKET-NO BUS)FreeSunday, January 26, 20259:15 AMThis ticket is for those who wish to confirm their attendance at the event but do not require a seat on the bus. Meeting spot: Human Powered Health at 77 Central St in Wellesley, MA. Buses will arrive approximately between 9-9:15 AM. Please note there is no bus back to Wellesley--please make your own arrangements to return to your vehicle. The run is 14 miles back to the Trackhouse.
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Registration Closed100 Days to Boston: Week 4FreeSunday, February 02, 20259:00 AMJoin us for the fourth run in our build to Boston. This week, we'll complete 14.5 miles that includes a workout of 3-5x2 kilometers at marathon pace. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closed100 Days to Boston: Week 5 - CANCELLEDFreeSunday, February 09, 20259:00 AMJoin us for the fifth run in our build to Boston. This week, we will run 16 miles out on Commonwealth Ave and back on the Charles. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closed100 Days to Boston: Week 6- CANCELLEDFreeSunday, February 16, 20259:00 AMJoin us for the sixth run in our build to Boston. This week, we revisit the "Half on the Half": an out-and-back half marathon on the Boston course. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closed100 Days to Boston: Bus Run #2 (BUS TICKET)$5Sunday, February 23, 20258:20 AMThis ticket is to solely reserve your spot on the bus to leave from the Trackhouse. If you do not want a bus ticket and want to meet at the drop-off location, please reserve the free ticket and check the event card for the exact meet point for the run start. Join us for the seventh run in our build to Boston. This week, we embark on our second bus run of the program. Doors will open at 8:00 AM, we will begin bus loading at 8:20 AM, and the buses will depart at 8:30 AM. Bag drop is available at the Trackhouse pre-run; no items may be left on the buses. The run is 16.5 miles back to the Trackhouse.
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Registration Closes April 21, 2025100 Days to Boston: Bus Run #2 (MEET POINT TICKET-NO BUS)FreeSunday, February 23, 20259:15 AMThis ticket is for those who wish to confirm their attendance at the event but do not require a seat on the bus. Meeting spot: Natick Common in Natick (12 S Main St). Buses will arrive approximately between 9-9:15 AM. Please note there is no bus back to Natick--please make your own arrangements to return to your vehicle. The run is 16.5 miles back to the Trackhouse.
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Registration Closes April 21, 2025100 Days to Boston: Week 8FreeSunday, March 02, 20259:00 AMJoin us for the eighth run in our build to Boston. This week, we'll run 17 miles out to Fresh Pond along the Charles. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closes April 21, 2025100 Days to Boston: Week 9FreeSunday, March 09, 20259:00 AMJoin us for the ninth run in our build to Boston. This week, we'll run 18 miles down the Southwest Corridor, up the Emerald Necklace, then back the way we came. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closes April 21, 2025100 Days to Boston: Week 10FreeSunday, March 16, 20259:00 AMJoin us for the tenth run in our build to Boston. This week, we revisit the "Half on the Half": an out-and-back half marathon on the Boston course. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closes April 21, 2025100 Days to Boston: Week 11FreeSunday, March 23, 20259:00 AMJoin us for the eleventh run in our build to Boston. This week, we'll run 19 miles around the Charles. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closes March 21, 2025100 Days to Boston: Bus Run #3 (BUS TICKET)$5Sunday, March 30, 20258:20 AMThis ticket is to solely reserve your spot on the bus to leave from the Trackhouse. If you do not want a bus ticket and want to meet at the drop-off location, please reserve the free ticket and check the event card for the exact meet point for the run start. This week, we embark on our third bus run of the program. Doors will open at 8:00 AM, we will begin bus loading at 8:20 AM, and the buses will depart at 8:30 AM. Bag drop is available at the Trackhouse pre-run; no items may be left on the buses. The run is 20.4 miles back to the Trackhouse.
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Registration Closes April 21, 2025100 Days to Boston: Bus Run #3 (MEET POINT TICKET- NO BUS)FreeSunday, March 30, 20259:15 AMThis ticket is for those who wish to confirm their attendance at the event but do not require a seat on the bus. Meeting spot: Downtown Framingham Common in Framingham (Park Street Side). Buses will arrive approximately between 9:15-9:30 AM. Please note there is no bus back to Framingham--please make your own arrangements to return to your vehicle. The run is 20.4 miles back to the Trackhouse.
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Registration Closes April 21, 2025100 Days to Boston: Week 13FreeSunday, April 06, 20259:00 AMJoin us for our thirteenth run of 100 Days. This week, we'll run 15 miles down the Southwest Corridor and up the Emerald Necklace. Doors will open at 8:30 AM, and the run will start at 9 AM.
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Registration Closes April 21, 2025100 Days to Boston: The Final TenFreeSunday, April 13, 20259:00 AMJoin us for our final long run of 100 Days. This week, we'll run ten miles down the Southwest Corridor and back up the Emerald Necklace. Doors will open at 8:30 AM, and the run will start at 9 AM.
