Is This Plan For You?
This 16-week Marathon Base plan by GA Endurance is designed for runners who want to build a strong, durable, and efficient aerobic foundation before progressing into race-specific marathon training.
It is ideal for athletes who are returning to structured training or aiming to develop consistency, endurance capacity, and structural resilience within a more time-efficient framework.
If your goal is to establish a solid aerobic base, improve running efficiency, and prepare your body for higher training loads, this plan provides a clear and progressive pathway.
What You Can Expect
• A complete 16-week structured Base progression
• Gradual and controlled volume increase to support sustainable adaptation
• Strong emphasis on aerobic capacity, efficiency, and movement economy
• Consistent, easy, and steady-state runs to build endurance durability
• Introduction of controlled tempo work to prepare for future intensity
• Progressive long runs to safely extend aerobic capacity
• Periodized recovery weeks to support adaptation and reduce injury risk
• Development of structural durability (tendons, muscles, connective tissue)
• Clear, easy-to-follow workouts using pace, heart rate, or perceived effort
• Optional strength guidance to support injury prevention and durability
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 8–12 km
• Train consistently 4–5 times per week
• Be ready to follow a progressive endurance-focused structure
A GPS watch and heart rate monitor are recommended for best results.
Final Note
This 16-week base plan is designed to build the physiological and structural foundation required for high-level marathon performance.
You will improve aerobic capacity, enhance durability, and establish the consistency needed to transition into more advanced marathon training phases.
Explore more training plans at GA Endurance
I’m Goksen Cinar, MSc, a sports scientist, national team coach, and founder of GA Endurance. With 25+ years of experience and more than 2,000 athletes coached, I combine sports science, data analysis, and practical endurance coaching. I’m a 4-time IRONMAN 70.3 World Championship qualifier and 4-time full-distance IRONMAN finisher, providing full-time coaching built around each athlete’s goals and life.My coaching philosophy begins with the individual.