Is This Plan For You?
This 18-week Half Distance Beginner plan by GA Endurance is designed for athletes who want a gradual and well-structured progression toward race day with enough time to build confidence across all three disciplines.
It is ideal for individuals who are already active in swim, bike, and run, and want a slightly extended preparation phase to develop endurance, consistency, and race readiness without unnecessary pressure.
If you are looking for a balanced and supportive roadmap that allows progressive development while preparing you effectively for race demands, 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 controlled endurance development
• Balanced progression across swim, bike, and run disciplines
• Strong emphasis on aerobic capacity, consistency, and durability
• Progressive long sessions to build endurance and fatigue resistance
• Gradual introduction of tempo and race-specific pacing work
• Strategically placed recovery weeks to support adaptation and reduce injury risk
• Focus on movement efficiency, pacing awareness, and training discipline
• 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:
• Swim at least 800–1,200 meters (with rest as needed)
• Ride comfortably for 90–150 minutes
• Run continuously for 45–60 minutes
• Train consistently 3–4 days per week
• Have a basic aerobic base and recent activity across disciplines
A GPS watch is helpful, and a heart rate monitor is recommended for better intensity control.
Final Note
This 18-week beginner half distance plan is designed to provide a more comfortable and progressive pathway toward race readiness.
With additional time for development, the focus is on consistency, gradual progression, and confidence building. If followed with discipline, this plan will help you improve endurance, develop pacing awareness, and arrive at race day ready to successfully complete the distance.
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.