Is This Plan For You?
This 40-week Half Distance Intermediate plan by GA Endurance is designed for triathletes with a consistent training background who want a focused, efficient progression toward a strong 70.3 performance.
It is ideal for athletes who are comfortable training across swim, bike, and run, and are ready to follow a structured system that prioritizes endurance, efficiency, and race-specific execution within a slightly more condensed timeline.
If you are looking for a performance-driven roadmap that builds on a solid foundation to reach race readiness with precision and control, this plan provides a clear, structured pathway.
What You Can Expect
• A complete 40-week structured Half Distance progression from base to race day
• Reduced base duration with earlier transition into build and race-specific phases
• Balanced development across swim, bike, and run with controlled load progression
• Strong emphasis on aerobic capacity, consistency, and durability
• Progressive long sessions to build endurance and fatigue resistance
• Structured tempo and threshold work introduced earlier and more frequently
• Bike sessions focused on power control, pacing, and sustained efforts
• Run sessions designed to improve efficiency and performance under fatigue
• Swim sessions including technique, aerobic conditioning, and sustained efforts
• Integrated brick sessions to develop race-specific adaptation and transitions
• Strategic recovery weeks to support adaptation and prevent overtraining
• Clear, easy-to-follow workouts using power, 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:
• Swim at least 1,200–1,800 meters continuously
• Ride consistently for 2–3 hours
• Run continuously for 50–65 minutes
• Train consistently 4–6 days per week
• Have prior experience with structured triathlon training
A GPS watch, heart rate monitor, and bike power meter are recommended for best results.
Final Note
This 40-week intermediate half-distance plan is built for athletes who want to maximize performance within a more efficient preparation window.
With a slightly condensed structure, consistency, execution quality, and recovery management become critical. If followed with discipline, this plan will help you build endurance, refine pacing strategy, and arrive at race day confident and ready to perform at your best.
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.