🏊 16-Week Swim Plan for 70.3 & Ironman

Swim Training for Half & Full Distance Triathlon

This 16-week swim training plan is designed for triathletes preparing for 70.3 and Ironman events through a progressive methodology focused on aerobic endurance, technical efficiency and sustainable pacing for long-distance racing.

The program combines technical sessions, aerobic development and race-specific endurance work to help athletes improve swimming efficiency, pacing control and confidence for half and full distance triathlon competition.

🔹 Who this plan is for

• Triathletes preparing for 70.3 or Ironman events
• Athletes with basic or intermediate swimming experience
• Triathletes looking to improve swimming endurance and efficiency
• Athletes seeking more structured swim training
• Triathletes focused on long-distance performance development

This plan is ideal for athletes looking to develop a more efficient and sustainable swim for endurance triathlon racing.

🔹 Plan structure

• 16 weeks of progressive swim training
• Aerobic endurance and pacing sessions
• Technical drills and stroke efficiency work
• Race-specific endurance intervals
• Progressive volume development
• Balanced load and recovery distribution
• Specific preparation for 70.3 and Ironman swimming demands

Each phase is designed to improve sustainable pacing and energy efficiency during prolonged efforts.

🔹 Training methodology

The plan combines:

• Progressive aerobic development
• Swim technique improvement
• Stroke efficiency and movement economy
• Open water endurance-oriented intervals
• Recovery and load management
• Sustainable progression of training volume

The methodology is designed to improve both endurance and technical quality for long-distance triathlon performance.

🔹 Technical terminology used
🏊 Swimming

• FR / BK / BR / FL — freestyle, backstroke, breaststroke and butterfly
• IM — individual medley
• DRILLS — technical drills
• Catch-Up — coordination drill
• SCULL — sculling drills
• B3 / B5 — bilateral breathing
• on 45” — send-off every 45 seconds

🔹 Recommended equipment

• 25m or 50m swimming pool
• Pull buoy
• Swim paddles
• Optional fins
• Standard swim training equipment

🏁 Develop a more efficient swim, improve long-distance endurance and prepare confidently for your next 70.3 or Ironman race through progressive and performance-oriented swim training.