swim threshold workout

Saturday Swim Session: Threshold Flow Builder

This session is designed to build sustainable speed through rhythm, control, and repeatable effort. The combination of drill work and short-rest 50m repetitions helps sharpen your technique before asking you to hold strong pace under fatigue. It’s not about sprinting early and surviving late—it’s about flowing smoothly, swimming consistently, and keeping quality high from the first rep to the last. Sessions like this are excellent for lifting your threshold pace and improving your ability to swim faster for longer.

Each Saturday I will post a Swim Session, and most weeks I will load three options up for you to do. Option A is for swimmers who are after a workout between 1,000 & 2,000 metres. Option B is for swimmers who are after a workout between 2,000 & 3,000m and Option C will be greater than 3,000m.

Read this article here for an explanation of Swim Intensity.

Option A

  • 400 WU;
  • 6x 50 Drill/Swim;
  • 16x 50 15RI;
  • 200 CD (1,700)

Option B

  • 500 WU;
  • 12x 50 Drill/Swim;
  • 20x 50 15RI;
  • 200 CD (2,300)

Option C

  • 600 WU;
  • 12x 50 Drill/Swim;
  • 30x 50 15RI;
  • 300 CD (3,000)

For the Warm Up (WU) start with 400m (Option A), 500m (Option B) or 600m (Option C) of mixed swimming, include a range of strokes. During the warm-up feel free to stop and stretch as needed.  It doesn’t need to be a continuous swim.

Next up is a drill set. There are six (Option A) or twelve (Options B & C) 50m Drill/Swim repetitions. This 50m is done continuously with the first 25m done as a drill before going straight into the final 25m of regular swimming. Pause after each rep and have a short rest while you focus and mentally prepare for the next drill. Here are some drills that you can include in your programme.  Complete each drill once through for Option A, and twice times through for Options B & C.

  1. Kick On Side (KOS) left side 
  2. Kick On Side (KOS) right side 
  3. 6/1/6 
  4. 6/3/6
  5. Popov
  6. Broken Arrow

The main set is a set of sixteen (Option A), twenty (Option B) or 30 (Option C), 50m reps. Take fifteen-second Rest Interval (RI) after each rep. Aim to swim these reps as consistently as possible.

Complete the workout with a 200m (Options A & B) or 300m (Option C) Cool Down (CD). Unlike the previous sets which have to be freestyle, the Cool Down (CD) (like the Warm Up (WU)) can be any stroke you wish to swim.  You can also stop and rest after any length.  I encourage you to stop and stretch during the cool-down.

If you would like further advice feel free to contact me.

I am the Head Coach & Director of Qwik Kiwi Coaching.

I specialise in assisting first-timers and recreational athletes to achieve their sporting goals. I can be contacted at coachray@coachray.nz and 021 348 729.

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