Is This Plan For You?
This 40-week Half Marathon Base plan by GA Endurance is designed for runners who want a complete, long-term development system built on precision, consistency, and sustainability.
It is ideal for intermediate athletes who can comfortably run 8–12 km and are ready to commit to a fully structured progression that develops aerobic capacity, pacing control, and endurance durability over time.
If you are looking to build your performance properly—without shortcuts—this plan provides a comprehensive and highly structured pathway.
What You Can Expect
• A complete 40-week Base progression designed for long-term development
• Gradual and highly controlled increase in volume with precise intensity management
• Strong emphasis on aerobic capacity, steady-state strength, and fatigue resistance
• Long and structured steady sessions to improve pacing stability and endurance durability
• Integrated testing phases to track progress and recalibrate training zones throughout the plan
• Clear, easy-to-follow workouts using pace, heart rate, or perceived effort
• Optional strength guidance to support injury prevention and long-term consistency
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
• Have prior structured training experience
• Be committed to a long-term, progressive training process
A GPS watch or heart rate monitor is strongly recommended for best results.
Final Note
This 40-week Base plan is not just a training block—it is a complete development system.
Over time, you will build a highly efficient aerobic engine, improve pacing precision, and develop exceptional endurance durability.
This long-term approach allows for deeper adaptation, reduced injury risk, and a more stable transition into race-specific training phases.
Explore more training plans at GA Endurance
Goksen Cinar, MSc, is a sports scientist, national team coach, and founder of GA Endurance. With more than 25 years of coaching experience, he combines sports science, endurance coaching, and data-driven methodology to help athletes achieve sustainable performance improvements. He is a 4-time Ironman 70.3 World Championship qualifier and 4-time full-distance Ironman finisher.