Race-Pace 500m Repeats: 3x500m Pool Swim Session

Session Overview

This session develops your ability to sustain race pace over a repeated 500m effort — a key skill for Olympic and 70.3 distance triathlon, where consistent splits across 1500m and 1900m swims determine your exit position from the water. Three reps at target race pace with controlled rest intervals teaches your body to maintain technique and rhythm as fatigue accumulates through the main set.

What You’ll Need

• 25m or 50m pool
• Pace clock or GPS watch with lap counter
• Pull buoy (optional for warm-up drills)
• Swim fins (optional for warm-up)

Warm-Up (15 minutes)

Swim 600m easy to open your shoulders and establish rhythm. Include 4x25m drills of your choice — catch-up, fingertip drag, or single-arm — with 15 seconds rest between each. Finish the warm-up with 4x50m descending pace (each rep slightly faster than the last) with 20 seconds rest, so your body is primed before the main set begins.

Main Set

3 repetitions of 500m at your target race pace (approximately CSS pace minus 2-3 seconds per 100m for Olympic distance). Take 90 seconds of full rest between each rep. Focus on even splits throughout — aim for each 100m within 3 seconds of the others across the full 500m.

• Rep 1: 500m at race pace — note your 100m splits at each turn
• 90 seconds full rest
• Rep 2: 500m at race pace — aim to match or improve your Rep 1 average split
• 90 seconds full rest
• Rep 3: 500m at race pace or faster — give everything on the final 100m

Cool-Down (10 minutes)

400m easy backstroke or choice at a very relaxed pace, focusing on long slow strokes and controlled breathing. Allow your heart rate to drop fully before exiting the water.

Coaching Notes

• To find your target pace: for a 1500m race goal of 22 minutes, your per-100m pace is 88 seconds. Subtract 3 seconds for the faster pool environment to get your 500m rep target pace.
• Common mistake: going too hard on Rep 1 and fading badly on Rep 3. Aim for Rep 2 to feel like your hardest sustained effort, with Rep 3 finishing on empty.
• Beginner: reduce to 2x400m with 2 minutes rest. Advanced: extend to 4x500m or reduce rest to 60 seconds.
• RPE guidance: Rep 1 around 7/10, Rep 2 around 7.5-8/10, Rep 3 should feel 8.5/10 by the final 100m.