24-Week 70.3 Half Ironman Triathlon Training Plan | EveryDayTri

This 24-week 70.3 triathlon training plan from EveryDayTri is designed for athletes preparing for a Half Ironman / 70.3 distance triathlon (1.9 km swim, 90 km bike, 21.1 km run).

With six months to prepare, this programme provides a structured and progressive build to help you develop the endurance, pacing, and durability required to successfully complete the 70.3 distance.

Training is primarily zone-based, allowing you to train with heart rate, pace, or power, while also incorporating Rate of Perceived Effort (RPE) to help you understand and manage effort during longer sessions and race day.

The plan also includes regular testing weeks to reassess your fitness and update training zones so your sessions stay accurate and effective as your fitness improves.

Perfect For:

Athletes preparing for their first 70.3 / Half Ironman

Triathletes stepping up from Olympic distance racing

Athletes looking for a structured 24-week Half Ironman training plan

Anyone training with heart rate, pace, power, or training zones

What’s Included:

Structured swim, bike, and run workouts

Progressive endurance sessions for long-distance racing

Brick workouts to prepare for race-day fatigue

Testing weeks to reassess fitness and update training zones

Gradual weekly progression with planned recovery

Guidance using training zones and perceived effort

Coach support if you need help adjusting sessions

By race day, you’ll have the endurance, pacing skills, and confidence to take on the 70.3 distance triathlon.

Created by EveryDayTri — practical triathlon training designed for real life.

Learn more: www.everydaytri.com