Training for a 70.3 triathlon, also known as a Half Ironman, is a challenging and rewarding endeavor. This article provides a detailed 70.3 training plan from a coaching perspective, offering insights into effective methodologies, workout examples, and tips for balancing training across swimming, biking, and running. We'll also cover incorporating strength training and managing fatigue using metrics like Training Stress Score (TSS).

The goal of this training plan is to prepare athletes for a successful 70.3 race, focusing on endurance, speed, and efficiency across all three disciplines. The plan is designed based on a progressive overload principle, gradually increasing training volume and intensity while allowing for adequate recovery. Athletes will use a three-zone heart rate system for running and cycling, and power zones for cycling, to tailor their training intensity. Swimming sessions will be structured around technique and speed work, often in a Masters swim setting.

A sample weekly training plan for a mid-level 70.3 triathlete includes a mix of swim, bike, and run workouts, along with strength training and recovery sessions. The plan is designed to span over 20 weeks, with specific sessions outlined for each day.

Monday:

• Swim: 2500 meters focusing on technique and speed intervals.
• Strength: Full-body workout (45 minutes).

Tuesday:

• Bike: 1.5-hour ride in Zone 2.
• Run: 45-minute tempo run.

Wednesday:

• Swim: 3000 meters endurance swim.
• Strength: Core and upper body workout (30 minutes).

Thursday:

• Bike: 2-hour ride with intervals (Zone 3).
• Run: 30-minute recovery run.

Friday:

• Swim: 2000 meters with mixed drills.
• Strength: Lower body workout (30 minutes).

Saturday:

• Bike: Long ride (3-4 hours in Zone 2).
• Run: 45-minute brick run after the bike.

Sunday:

• Rest or Active Recovery: Light yoga or a 30-minute easy swim.

Proper nutrition and hydration are critical to the success of any triathlon training plan. Ensure you fuel your body adequately before, during, and after workouts to maximize performance and recovery.

Pre-Workout Nutrition:

• Consume a balanced meal 2-3 hours before training.
• Hydrate well with water or a sports drink.

During Workout Nutrition:

• For workouts longer than an hour, consume 30-60 grams of carbohydrates per hour.
• Hydrate regularly with water or an electrolyte solution.

Post-Workout Nutrition:

• Consume a meal or snack with a 3:1 ratio of carbohydrates to protein within 30 minutes after training.
• Continue to hydrate and replace lost electrolytes.

Heart Rate Zones:

• Zone 1 (Endurance): 50-70% of Maximum Heart Rate (MHR) - Recovery and long endurance workouts.
• Zone 2 (Tempo): 70-85% of MHR - Building aerobic capacity.
• Zone 3 (Threshold): 85-100% of MHR - Interval training to increase lactate threshold.

Bike Power Zones:

• Zone 1: Active recovery (<55% FTP)
• Zone 2: Endurance (56-75% FTP)
• Zone 3: Tempo (76-90% FTP)

Bike Volume:

• Priority: Biking should constitute the highest volume of training due to lower injury risk.
• Proportion: 50-60% of total training time should be dedicated to cycling.
• Focus: Long rides help develop the aerobic system and muscular endurance.

Running Volume:

• Caution: Running requires more recovery due to high impact.
• Proportion: 20-30% of total training volume.
• Quality Workouts: Focus on quality sessions like interval training or tempo runs.

Integrating Bike and Run Sessions

Brick Sessions: Combining bike and run sessions back-to-back helps simulate race conditions. For example, after a 2-3 hour bike ride at Zone 2, transition immediately into a 30-minute run at Zone 2 to Zone 3.

Strength training improves muscular endurance, power, and injury prevention. Incorporate exercises targeting key muscle groups used in swimming, biking, and running.

Key Strength Exercises:

• Squats and Lunges: Build leg strength and stability.
• Core Workouts: Planks, Russian twists, and leg raises to enhance core stability.
• Upper Body Work: Push-ups, pull-ups, and dumbbell rows for swimming power.

Mental toughness is as important as physical preparation in a 70.3 triathlon. Develop a race strategy and practice mental skills during training to improve focus and performance on race day.

Visualization Techniques:

• Visualize each segment of the race, including transitions.
• Practice positive self-talk and develop a mantra for tough moments.

Race Strategy:

• Swim: Start at a comfortable pace, focus on technique, and avoid getting caught up in the initial rush.
• Bike: Maintain a steady pace in Zone 2, avoid going too hard on hills, and keep nutrition in check.
• Run: Start conservatively, maintain good form, and gradually increase pace.

Training Gear:

• Swim Gear: Wetsuit, goggles, and swim cap.
• Bike Gear: Road or triathlon bike, helmet, cycling shoes, and bike maintenance tools.
• Running Gear: Running shoes, breathable clothes, hat, and sunglasses.
• Additional Gear: Triathlon suit, heart rate monitor, and bike trainer.

Training Programs and Coaching:

• Online Training Plans: Free plan or affordable options for 70.3 races.
• Coaching Services: Personalized coaching can significantly improve performance.

Nutrition and Hydration:

• Training Nutrition: Quality nutrition products for training.
• Race Day Nutrition: Specific products for race day.

Race Entry Fees:

• Registration Fees: Vary depending on the event and location.
• Rough Total Cost: Lower End: $1,500 to $3,000 (basic gear, online training plans, minimal nutrition, and race fees). Upper End: $5,000 to $10,000 (higher-end gear, coaching services, comprehensive nutrition, and travel expenses).

Embarking on a 70.3 Ironman training plan requires dedication and discipline, but the rewards are immense. Follow a structured plan balancing swimming, biking, running, strength training, and nutrition. Leverage the expertise of triathlon coaches, use heart rate and power zones to guide training, and stay focused on your goals.

This 70.3 triathlon training plan provides a comprehensive approach to preparing for a Half Ironman race. By following a structured plan with specific workouts tailored to improve performance in swimming, cycling, and running, athletes can maximize their potential on race day. Consistency, recovery, and proper nutrition are key to success.

• Friel, J. (2016). The Triathlete's Training Bible. VeloPress.
• Fitzgerald, M. (2018). 80/20 Triathlon. Da Capo Lifelong Books.