70.3 Race Morning Activation Swim Session

Session Overview

This short activation swim is designed for the morning of an IRONMAN 70.3 race, completed in the venue warm-up pool or a designated swim area before the race start. The goal is to prime your stroke mechanics, raise your heart rate gradually, and settle any pre-race nerves through familiar movement — not to tire yourself out. Completing this 25–30 minutes before your wave entry significantly reduces the shock of cold water entry and helps you settle into race pace faster in the opening 200m.

What You’ll Need

• Wetsuit (race wetsuit, fully zipped)
• Race goggles
• Swim cap
• Access to a warm-up pool or designated swim area (confirm venue arrangements in advance)

Warm-Up (5 minutes)

Enter the water calmly and begin with 100m of easy freestyle at a comfortable pace — no pressure, just movement. Focus on long, relaxed strokes, slow breathing, and letting your body adjust to the water temperature. If the warm-up pool is short course, simply complete easy lengths at this pace until you feel the water is no longer a shock.

Main Set

The main set is short and targeted — priming your stroke without creating fatigue. Focus on feel over speed.

• 4 x 50m: alternating catch-up drill (lengths 1 and 3) and fingertip drag drill (lengths 2 and 4). Easy pace, 20 seconds rest between each.
• 2 x 100m: build from easy to 70.3 race pace through each 100m, finishing the final 25m at race intensity. Rest 30 seconds between.
• 2 x 25m: fast effort at race pace or slightly above. Full rest between (60 seconds). This primes your anaerobic system without depleting it.

Cool-Down (5 minutes)

Finish with 100–150m of easy backstroke or relaxed freestyle, focusing on slow breathing and dropping your heart rate. Exit the water calmly and begin transition preparation. You should feel loose, warm, and alert — not tired.

Coaching Notes

• This session is only effective if you have access to a warm-up pool or designated swim area at your race venue. Check the athlete guide well in advance — not all 70.3 events provide in-water warm-up access.
• Wear your race wetsuit for this activation. You want to confirm it feels right, get it fully saturated, and settle any discomfort before the gun goes off.
• Keep the fast 25m efforts genuinely fast — this primes your neuromuscular system for race pace — but resist the urge to add more reps. The goal is activation, not a workout.
• If no swim warm-up is available, replicate this with a dynamic dryland warm-up: arm circles, band pull-aparts, and leg swings, followed by a 5–10 minute easy jog to raise heart rate before your wave entry.