12-Week Boston Marathon Training Plan

Boston, MAApril 19, 2027

Start around January 25, 2027. The calendar below gives each phase a real date, then the course guidance shows where to make the build specific to Boston Marathon.

Boston is the one you earn. The world’s oldest annual marathon, run every year since 1897, is the only major where most of the field had to race their way in, and the Patriots’ Day point-to-point from Hopkinton to Boylston Street is the most storied 26.2 miles in the sport.

Race day
April 19, 2027
Start window
January 25, 2027
Runway
12 weeks
Course
downhill damage, then the Newton hills
Plan choice
Current training

Does this window fit your starting point?

Use this window when your recent training is steady and the opening week will not be a mileage jump. If you are returning after a long break, twelve weeks is too little room to rebuild and peak at the same time.

  • Your weekly mileage has been consistent for the last six to eight weeks.
  • You have completed recent long runs and do not need to rebuild from three easy miles.
  • You can protect the same number of run days from week one through race week.
  • You are prepared to begin race-specific work early instead of using a long base phase.

The 12-week Boston Marathon calendar

These dates define the job of each phase. Your current mileage, recent longest run, experience, goal, and available days still decide the actual workouts inside them.

Settle

Weeks 1–2

Jan 26, 2027–Feb 8, 2027

Hold close to your current volume, establish the weekly rhythm, and make sure the opening load is honest.

Build

Weeks 3–7

Feb 9, 2027–Mar 15, 2027

Grow the long run and weekly work with step-back weeks intact. There is no room to repay missed mileage.

Peak

Weeks 8–10

Mar 16, 2027–Apr 5, 2027

Complete the most race-specific long runs, rehearse fueling, and practice the terrain that will decide the final 10K.

Taper

Weeks 11–12

Apr 6, 2027–Apr 19, 2027

Reduce volume, keep the routine familiar, and arrive on race day without trying to squeeze in one more big week.

Make the window specific to Boston Marathon.

Course-specific work starts early in a 12-week build. Put the race's terrain and expected conditions into long runs once the opening weeks feel controlled, without adding extra hard days.

Read the full race guide

How to train for Boston

Downhill running is the non-negotiable. Boston's difficulty is eccentric load: long descents early, climbing at fatigue, descending again on trashed legs. Long runs that include sustained downhills (and finish over rolling terrain) build the specific durability this course examines at mile 21.

An April race means a winter buildup, and for most qualifiers that means treadmills, ice, and darkness through the biggest weeks. A plan that fits your real schedule, and treats missed days as life rather than failure, is what actually survives a New England or Midwest winter. Stride matches on exactly that.

Let your current training decide the actual plan.

Current mileage, recent longest run, marathon experience, goal, and available days determine which plans rank first. After you choose and subscribe, Stride dates every workout through April 19, 2027.

Build My Plan

12-week Boston Marathon plan questions, answered.

When should I start a 12-week Boston Marathon plan?

The 2027 Boston Marathon is scheduled for April 19, 2027, so the 12-week window opens around January 25, 2027. Treat that as the outside edge of the window, then line week one up with the plan's normal weekly rhythm.

Is a 12-week plan long enough for the Boston Marathon?

Use this window when your recent training is steady and the opening week will not be a mileage jump. If you are returning after a long break, twelve weeks is too little room to rebuild and peak at the same time. The course does not change the opening load you can handle, so choose from your current mileage and recent longest run before adding race-specific terrain.

How should I prepare for the Boston Marathon course in 12 weeks?

Course-specific work starts early in a 12-week build. Put the race's terrain and expected conditions into long runs once the opening weeks feel controlled, without adding extra hard days. Downhill running is the non-negotiable. Boston's difficulty is eccentric load: long descents early, climbing at fatigue, descending again on trashed legs. Long runs that include sustained downhills (and finish over rolling terrain) build the specific durability this course examines at mile 21.

What if the 12-week Boston Marathon window has already started?

Do not double weeks or cram missed mileage into the remaining calendar. Use your current mileage, recent longest run, experience, goal, and available days to choose a plan that can enter at an appropriate point while preserving the taper.

How long do I need to train for the Boston Marathon?

Most Stride marathon plans run 12 to 20 weeks, meaning a Boston buildup starts around the turn of the year and runs through winter. Get matched in the app and Stride maps every week from today to Patriots' Day.

What time do I need to qualify for Boston?

Standards are set by age group and gender: recent standards start at 2:55 (men) and 3:25 (women) for ages 18 to 34, easing with age. In oversubscribed years you also need a buffer under your standard to clear the cutoff. Confirm current standards on the B.A.A.'s official site before you plan a qualifying race.

Put the 12-week window against your actual race.

Each page counts back from race day, maps the 4 phases to real dates, and applies the window to that course and its typical conditions.