Training start dates for Boston 2027
| Plan | Week 1 starts | Peak week (3-week taper) | Taper starts |
|---|---|---|---|
| 12 weeks | Mon 25 Jan 2027 | Mon 22 Mar 2027 | Mon 29 Mar 2027 |
| 14 weeks | Mon 11 Jan 2027 | Mon 22 Mar 2027 | Mon 29 Mar 2027 |
| 16 weeks | Mon 28 Dec 2026 | Mon 22 Mar 2027 | Mon 29 Mar 2027 |
| 18 weeks | Mon 14 Dec 2026 | Mon 22 Mar 2027 | Mon 29 Mar 2027 |
| 20 weeks | Mon 30 Nov 2026 | Mon 22 Mar 2027 | Mon 29 Mar 2027 |
| 24 weeks | Mon 2 Nov 2026 | Mon 22 Mar 2027 | Mon 29 Mar 2027 |
Week 1 starts on a Monday so race day falls at the end of the final week (for a Monday race such as Boston, on the day after it).
Qualifying for Boston
Meeting the standard lets you apply. When more runners apply than there are places, the B.A.A. accepts the fastest relative to their standard, so the real bar is the standard minus the cutoff. See the full Boston qualifying standards for your age group.
Other majors
Londontraining start datesChicagotraining start datesNYCtraining start datesBerlintraining start datesTokyotraining start datesSydneytraining start dates
Build a custom calendar with the training start date calculator and set paces with the Pfitzinger or Hansons calculators.
Last reviewed: October 2026 · Health disclaimer