Is This Plan For You?
This 18-week Half Distance Advanced plan by GA Endurance is designed for experienced triathletes who want a comprehensive and performance-driven progression toward race day with sufficient time for optimal development and execution.
It is ideal for athletes who already have a strong training background across swim, bike, and run, and are ready to follow a demanding and structured system focused on maximizing endurance, efficiency, and race-specific performance.
If you are looking for a high-quality and progressive training block that allows controlled development while targeting peak performance, this plan provides a clear and structured pathway.
What You Can Expect
• A complete 18-week structured Half Distance progression leading into race day
• Extended base phase allowing gradual and sustainable endurance development
• High-level progression across swim, bike, and run disciplines
• Strong emphasis on aerobic capacity, efficiency, and durability
• Progressive long sessions to maximize endurance and fatigue resistance
• Structured threshold, tempo, and race-pace sessions introduced progressively
• Advanced bike sessions focused on sustained power, pacing precision, and efficiency
• Run sessions designed to optimize performance and durability under fatigue
• Swim sessions including technique refinement, aerobic conditioning, and sustained efforts
• Integrated brick sessions to simulate race demands and transitions
• Strategically controlled recovery to maintain peak performance 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 2,000–3,000 meters continuously
• Ride consistently for 2.5–4 hours
• Run continuously for 75–95 minutes
• Train consistently 5–6 days per week
• Have strong experience with structured triathlon training
A GPS watch, heart rate monitor, and bike power meter are strongly recommended for best results.
Final Note
This 18-week advanced half distance plan is designed to deliver a complete and performance-focused pathway toward race execution.
With extended time for development, the focus is on precision, execution quality, and intelligent load management. If followed with discipline, this plan will help you maximize endurance, refine pacing strategy, and arrive at race day ready to perform at your highest level.
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.