Workout Description

Why This Workout Is Very Hard

This workout stacks multiple brutal elements: 100 weighted step-ups (50lb pack) pre-fatigue the legs before 3 rounds of 800m runs, bike calories, and 25 front squats at 185/135lb. The front squats are the critical limiter — already heavy standalone, they become brutal on pre-exhausted legs after running and biking. Total volume, leg fatigue accumulation, and heavy barbell cycling under sustained cardio stress push this firmly into Very Hard territory.

Benchmark Times for Estrada

• Elite: <21:00
• Advanced: 23:30-26:30
• Intermediate: 30:00-34:00
• Beginner: >65:00

Training Focus

This workout develops the following fitness attributes:

• Stamina (9/10): Massive volume across 100 weighted step-ups, 2400m of running, 51 bike calories, and 75 front squats demands exceptional muscular endurance in legs, lungs, and core throughout.
• Endurance (8/10): Three rounds of 800m runs combined with bike calories and the initial 100 step-ups create sustained cardiovascular demand over a long duration, heavily taxing aerobic capacity throughout the workout.
• Strength (6/10): Front squats at 135/185 lb represent moderate-to-heavy loading, and the weighted backpack adds meaningful resistance to step-ups, creating real strength demands layered into the endurance stimulus.
• Flexibility (5/10): Front squats require solid thoracic extension, wrist mobility, and hip flexibility. The high volume amplifies any mobility restrictions, making adequate range of motion essential for safe execution.
• Speed (4/10): Pacing is critical across this long workout. Running and bike segments reward efficient turnover, but the overall stimulus is steady-state output rather than sprint-level cycling or transitions.
• Power (2/10): No explosive movements are programmed. Step-ups, running, biking, and front squats are all performed at controlled, sustained paces rather than with maximal power output.

Movements

• Air Bike
• Front Squat
• Run
• Box Step-Up

Scaling Options

Backpack weight: reduce to 20-25 lbs for women and 35 lbs for men if the Rx load compromises posture or gait on the step-ups. Box height: drop to 16 inches if hip flexor mobility or knee pain is an issue. Front squat weight: scale to 95 lbs for women and 135 lbs for men, or reduce further to 65/95 lbs for newer athletes — the goal is to keep moving, not to grind through singles. Volume modifications: reduce step-ups to 50-75 reps, reduce rounds to 2 if the athlete is newer or has limited time, and reduce the run to 400 meters per round. Substitutions: replace the run with a 500-meter row if running is not an option, and replace the bike with 20 calories on the rower if no bike is available.

Scaling Explanation

Scale the front squat weight if you cannot perform at least 10 unbroken reps at the prescribed load when fresh — under fatigue, that number will drop significantly. Scale the backpack if your torso rounds or your knees cave during the step-ups. Scale volume if you are newer to CrossFit or if your estimated finish time exceeds 80-90 minutes. The priority in this workout is keeping movement quality intact across all three rounds — especially on the front squats, where a broken rack position or forward lean under load creates injury risk. Intensity matters less here than consistency and technique. Athletes should aim to finish in 50-70 minutes at a challenging but sustainable pace.

Intended Stimulus

This is a long-duration grind — expect 45 to 75+ minutes of sustained effort. The workout opens with a loaded carry-style movement to pre-fatigue the legs and core before demanding three rounds of running, biking, and heavy front squats. The training effect targets muscular endurance, mental toughness, and the ability to maintain movement quality under accumulated fatigue. Think of this as a long, steady engine test with a strength tax built in. The primary challenge is mental — staying composed and moving consistently when your legs are already cooked from the step-ups.

Coach Insight

Treat the 100 box step-ups as a warm-up, not a race. Keep a steady, controlled pace — alternate legs every rep or every 5 reps to distribute the load. Resist the urge to push hard here; you have a lot of work ahead. On the runs, settle into a pace you can sustain for all three rounds — this is not a sprint. The bike calories should be attacked with moderate-to-high effort since 17 calories is a short burst; push here to make up time. The front squats are the make-or-break movement — at 135/185 lbs after all that leg fatigue, your rack position and core bracing will be tested. Break the 25 reps early and often: consider 8-7-5-5 or 5x5 from the start. Do not go to failure on the bar. Common mistakes: going out too fast on the step-ups, running too hard in round one, and trying to go unbroken on front squats when fatigued. Keep transitions tight and deliberate.

Benchmark Notes

100 box step-ups with a 50/35-lb backpack, then three rounds of an 800 m run, a 17-calorie bike and 25 front squats at 185/135 lb. L5 (34-39 min) takes about 7 minutes for the step-ups and 9 minutes a round, with the front squats in sets of 3-5. L10 (under 21 min) takes about 4:50 a round.

Modality Profile

4 movements: Box Step-Up (G - bodyweight), Run (M), Air Bike (M), Front Squat (W - barbell with external load). G: 1/4 = 25%, M: 2/4 = 50%, W: 1/4 = 25%

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