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#Pillar 3: Cardio & Engine Building

Every RB100 article tagged pillar 3: cardio & engine building, newest first.

Coach outlining weekly training plan on whiteboard labelled Zone 2, Threshold, Intervals, Brick

Latest · 12 Nov 2025

Weekly Engine Builder: The HYROX Cardio Template

Build a balanced HYROX cardio plan that develops endurance, speed and recovery. This weekly engine template combines Zone 2, threshold, interval and brick sessions for Season 2025/2026.

Split-scene composition showing athlete running on a curved treadmill on one side and outdoors on the other, consistent form and stride

Article · 12 Nov 2025

Treadmill vs Outdoor Running for HYROX Prep

Athlete checking sports watch mid-run inside HYROX venue

Article · 12 Nov 2025

Heart Rate, Pace or RPE: The Best Way to PACE a HYROX

Athlete running light and tall, relaxed shoulders, visible breathing rhythm

Article · 12 Nov 2025

Breathing, Cadence and Form: Running Economy for HYROX

Athlete reviewing splits and pacing chart on whiteboard after threshold intervals

Article · 12 Nov 2025

Threshold Training for HYROX: Field Tests and Weekly Progression

Athlete stepping from run lane to sled zone mid-transition, purposeful stride

Article · 11 Nov 2025

Brick Sessions for HYROX: Run-to-Station and Station-to-Run

Athlete mid-SkiErg pull, full-body engagement with visible lats and hip drive

Article · 11 Nov 2025

SkiErg Efficiency for HYROX: Lats, Hips and Rhythm

Athlete rowing at controlled cadence

Article · 11 Nov 2025

Rowing for HYROX: Stroke Rate, Split Targets and Transitions

Athlete on curved treadmill at easy pace, calm breathing visible

Article · 11 Nov 2025

Zone 2 for HYROX: Aerobic Base That Doesn’t Steal Speed

Athlete running past HYROX station lanes mid-race, steady stride and relaxed face

Article · 11 Nov 2025

HYROX Running Engine: How to Hold Pace Across 8×1 km