When are most 5K races held in Boston?
November is the busiest month for 5K races in Boston, with 4 of the 10, followed by October with 3. If you are flexible on the date, that is the quickest way to narrow things down.
Massachusetts · 5K
2026-2027 5K Races in Boston, Massachusetts
Every upcoming 5K around Boston, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.
10 upcoming 5K races found · 3 with finish-time stats
By the numbers
The Biggest and Longest-Running
The Boston races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
Sun, Oct 25, 2026Fall Fest: Run & Walk for the Esplanade Boston, MAFrom $50Details Sun, Oct 25, 2026The Michael J. Fox Foundation's Boston Run/Walk Boston, MARegistration closedFreeDetails Fri, Oct 30, 2026Massachusetts Fall Community 5K. Boston, MAFreeDetails Sat, Nov 7, 2026DAV 5K Boston Boston, MAFrom $30Details Sun, Nov 8, 2026Boston River Run Boston, MAFrom $45Details Sat, Nov 14, 2026Lingzi Dream Dash 5k Boston, MAFrom $35Details Sun, Nov 15, 2026Girls On The Run Greater Boston Fall Season Celebratory 5K Boston, MAFrom $35Details Sat, Dec 12, 2026South Boston Catholic Academy Jingle Bell Run 2026 Boston, MAFrom $30Details Sun, May 16, 2027Race to Cure Sarcoma Boston Boston, MAFrom $10Details Sat, Sep 25, 2027Colin's Joy Project 5K Boston, MAFrom $30Details
Train for it
Run Clubs in Boston
The fastest way to a start line is a standing group run. These Boston clubs welcome 5K runners of all paces.
Browse all Boston run clubs →How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Oct 25, 2026.
Common Questions About Running a 5K in Boston
Are Boston 5K races beginner-friendly?
Yes, for the most part. Across the 3 5K races in Boston with published results, the typical median finish is around 33:01, which means half of every one of those fields came in slower than that. Recreational runners and walk-runners are the bulk of these fields, not the exception.
Where can I train for a 5K in Boston?
Join a local run club. Boston Fun Run, Boston Road Runners, Forest Hills Runners and others in Boston welcome runners of all paces, and a weekly group run is the most reliable way to hold a training block together.