Boston Marathon takes place on Mon, Apr 19, 2027 in Hopkinton, United States. The main route is 42.2 km.
- Date
- Mon, Apr 19, 2027
- Start
- Hopkinton 🇺🇸
- Distance
- 42.2 km
- Climbing
- 248 m
- Level
- Open to all
Your 28-week plan to Boston Marathon
The Base phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.
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The Boston Marathon is the world's oldest annual marathon, featuring a point-to-point net-downhill course from Hopkinton to Boston that includes the challenging Newton Hills.
What this race demands
The Boston Marathon demands sustained aerobic endurance over a 42.2 km distance, requiring athletes to manage significant pounding on a net-downhill profile while conserving legs for the late Newton Hills.
Downhill Impact Tolerance
The net-downhill profile from Hopkinton to Boston places unusual eccentric loading on the quadriceps and lower legs, demanding specific preparation to absorb downhill impact over 42.2 km.
Late-Race Strength
The presence of the challenging Newton Hills in the latter stages requires athletes to maintain running efficiency and muscular endurance after enduring miles of earlier downhill running.
Aerobic Endurance
Covering the full marathon distance of 42.2 km demands a high level of continuous cardiovascular output and efficient pacing throughout the spring event.
Athletes should target 60 to 90 grams of carbohydrates per hour to sustain energy stores over the expected marathon duration.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
3:55–4:45
Peak-week training
5–7 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Your road to race day
Race day at Boston Marathon is 28 weeks away. This is how a coach divides that time. The first phase starts now.
01Base16 weeks · Oct 6, 2026 – Jan 25, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Jan 26, 2027 – Mar 8, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Mar 9, 2027 – Mar 29, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Mar 30, 2027 – Apr 12, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Apr 13, 2027 – Apr 19, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is Boston Marathon?
Boston Marathon takes place on Mon, Apr 19, 2027 in Hopkinton, United States.
How long is Boston Marathon?
The main route is 42.2 km.
What does Boston Marathon demand?
The Boston Marathon demands sustained aerobic endurance over a 42.2 km distance, requiring athletes to manage significant pounding on a net-downhill profile while conserving legs for the late Newton Hills.
How much climbing does Boston Marathon have?
Boston Marathon has 248 m of climbing.
Who is Boston Marathon for?
Boston Marathon is open to all participants.
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