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Boston Marathon 2026: 18 weeks Beginner Prep - Start December 15 2025

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Boston Marathon 2026: 18 weeks Beginner Prep - Start December 15 2025

Includes Structured Workouts

Structured Workouts automatically sync with compatible devices and guide you through workouts in real time.


Learn More about Structured Workouts.

Author

Triaperformance - IRONMAN U Certified coach

All plans by this Coach

Length

18 Weeks

Includes Structured Workouts

Structured Workouts automatically sync with compatible devices and guide you through workouts in real time.


Learn More about Structured Workouts.

Plan Description

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2026 Boston Marathon: Beginner 18-Week Training Plan


Plan Overview

  • Duration: 18 Weeks

  • Start: December 15, 2025

  • Weekly Volume: Up to 90 km (peak week) - Average: 50 km/week

  • Training Methodology: Heart Rate Based

Looking for different mileage / intensity (pace-power) options? Check out other volume variations here.


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Training distribution


This plan covers every energy system required for marathon success, offering a well-rounded approach to get you to the finish line faster:

  • Recovery Runs: To absorb training adaptations.

  • Aerobic Base: Building endurance efficiency.

  • Lactate Threshold: Pushing your sustainable speed.

  • Marathon Pace Efforts: Dialing in your race-day rhythm.

  • VO2 Max Intervals: Increasing top-end engine power.

  • Long Runs: The staple of marathon resilience.


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What kind of support is included with this individual plan?



  • This is a self-guided ("DIY") training plan designed for athletes who are comfortable following a structured program.

  • For technical platform support (syncing, uploads, etc.), please contact the TrainingPeaks support team.

  • Looking for email support and community? Our FULL ACCESS Subscription includes 24/48h email support, live "Coach's Corner" Q&A, and access to our entire 50+ plan library.

  • Looking for 1-1 coaching? For personalized plans, weekly analysis, and unlimited WhatsApp support, email me at coach@triaperformance.com or send me a message on WhatsApp to learn about my private coaching packages.

  • Visit our website for more: triaperformance.com

How it Works

Load Your Plan

Quickly view upcoming workouts in the TrainingPeaks app.

Workout and Analyze

Upload completed workouts from your favorite tracking app or device.

Track Your Progress

Get feedback, stay on top of your training and perform at your best.

Learn More

Training Plan Sample Week

Stats

Average Weekly Breakdown

Workouts Weekly Average Longest Workout
Run x5
06:08:00 03:09:00
Day Off x2
—— ——
Workouts Per Week Weekly Average Longest Workout
Run
06:08:00 03:09:00
Day Off
—— ——

Training Load By Week


This plan works best with the following fitness devices:

  • Heart Rate Monitor
  • GPS

All supported devices

Ivan Koch

Triaperformance

Iván Koch - IRONMAN U Certified Coach

🇪🇸 Somos partners de Training Peaks. Coach certificado nivel 2. Alcanza tus metas con coaching 1-1 o planes pre diseñados de triatlón, running, ciclismo, natación y duatlón. ⚡️ Análisis de datos y metodología polarizada para resultados óptimos. 🚀

🇺🇸 TrainingPeaks Partner. Level 2 Certified Coach. Achieve your goals with 1-on-1 coaching or pre-designed running to triathlon plans. Data analysis and polarized training methodology for optimal results. 🚀


  • This plan includes a Free Basic TrainingPeaks Account.
  • Access your training plan anywhere on the TrainingPeaks mobile and desktop apps.
  • Track your performance with robust data tracking and detailed graphs.
  • Plan for your event in the TrainingPeaks calendar.
  • Track your weight, sleep, hours, fatigue and stress while you train.
  • Completed workouts sync with popular apps like Garmin and Wahoo. Learn More
  • If plan includes Structured Workouts, then planned workouts sync to compatible devices and guide you through workouts in real time. Learn More

Refund Policy

This plan is protected by our Refund Policy and may, with the author's approval, be exchanged for a plan of equal value from the same author.

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