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GA Endurance | Marathon Advance | 12 Weeks | Structured Plan | Coach Access

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GA Endurance | Marathon Advance | 12 Weeks | Structured Plan | Coach Access

Includes Structured Workouts

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


Learn More about Structured Workouts.

Author

GA Coaching

All plans by this Coach

Length

12 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

Is This Plan For You?

This 12-week Marathon Advanced plan by GA Endurance is designed for experienced runners who want a highly focused, race-specific, and performance-driven progression toward peak marathon performance within a condensed preparation window.

It is ideal for athletes with a solid endurance background who are already prepared for structured training and need a precise system to sharpen performance and optimize race execution.

If you are targeting a personal best or a high-quality race execution with limited preparation time, this plan provides a clear and efficient pathway.


What You Can Expect

• A complete 12-week structured progression focused on Build → Race Preparation → Peak

• High-impact, time-efficient training with precise intensity distribution

• Strong emphasis on marathon pace control, lactate threshold, and fatigue resistance

• Structured long runs progressing into race-specific endurance sessions

• Marathon pace integration and execution strategy development

• Targeted sessions to improve pacing precision and metabolic efficiency

• Short testing phases to validate fitness and refine training zones

• Periodized recovery weeks to ensure adaptation and consistency

• A structured taper phase to deliver peak race-day performance

• Clear, easy-to-follow workouts using pace, heart rate, or perceived effort

• Optional strength guidance to support durability and injury prevention


Coaching & Support

This plan includes Coach Access.

If you have any questions during your training, you can reach out anytime via:

coachsupport@gaendurance.com


Requirements

To start this plan, you should be able to:

• Run continuously for at least 18–22 km

• Train consistently 5–6 times per week

• Have strong prior structured training experience

• Be preparing for a marathon within the next 10–12 weeks

A GPS watch and heart rate monitor are strongly recommended for the best results.


Final Note

This 12-week plan is designed to sharpen your marathon performance through a focused and race-specific system.

You will refine your pacing and precision, enhance your fatigue resistance, and develop the control required to execute at a high level on race day.

Explore more training plans at GA Endurance

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 x6
06:16:00 03:00:00
Day Off x2
—— ——
Workouts Per Week Weekly Average Longest Workout
Run
06:16:00 03:00:00
Day Off
—— ——

Training Load By Week


This plan works best with the following fitness devices:

  • Heart Rate Monitor

All supported devices

GA Endurance

GA Coaching & Sports Science

Goksen Cinar, MSc, and Ozgur Axaman, combining decades of coaching experience with applied sports science. Both are multiple-time Ironman 70.3 World Championship qualifiers, with extensive full-distance Ironman experience. Their system integrates structured training, data-driven methodology, and real-world coaching to help athletes train with clarity, consistency, and long-term performance focus.


  • 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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