Phil Mosley's Ironman Speed Brick
Brick Sessions, March 26, 2025
A brick session is a great way to develop your body for the rigours of transitioning from one discipline to the next. This session is perfect for Ironman & Ironman 70.3 triathletes.
For a full understanding of my Level's intensity system, please read my previous articles about intensity for cycling and running.
This workout comes from an article Phil Mosley the Head Coach and Founder of My Pro Coach, wrote for his website. You can read the article here.

Phil Mosley's Ironman Speed Brick
- Bike
- 15min WU Level II;
- 2x 15min Level III, 3min RI Level II;
- 15min Level II;
- Run
- 10min Level III;
- 20min CD Level II;
- Stretching 10min
Start on the bike with a warm-up (WU) for fifteen minutes at Level II. Keep the cadence above 90 rpm.
Complete two intervals at Level III for fifteen minutes, with a three-minute Rest Interval (RI) at Level II between the reps.
Prior to transitioning onto the run ride gently at Level II for fifteen minutes.
Start the run at Level III for ten minutes.
To complete the run, continue into the Cool Down (CD) by jogging at Level II for twenty minutes.
Finish with 10 minutes of stretching to assist with the recovery.
Read more about the benefits of brick sessions here:
I am the Head Coach and Director of Qwik Kiwi – Endurance Sports Consultant.
I specialise in assisting first-timers and recreational athletes in achieving their sporting goals. I can be contacted at coachray@coachray.nz and 021 348 729.
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Originally Published: https://www.coachray.nz/2023/09/25/monday-brick-phil-mosleys-ironman-speed-brick/