Workout Description

Why This Workout Is Very Hard

This is Murph with a vest — one of CrossFit's most iconic benchmark tests of volume and endurance. 20 rounds accumulates 100 pull-ups, 200 push-ups, 300 air squats, and 4,000 meters of running, all under load. The vest compounds every movement: pull-ups become significantly harder, push-ups degrade rapidly, and running economy suffers. Cumulative fatigue across 45-75+ minutes makes this a true test of mental and physical endurance, not just fitness.

Benchmark Times for Gavin

• Elite: <36:00
• Advanced: 39:30-43:30
• Intermediate: 48:30-54:30
• Beginner: >97:00

Training Focus

This workout develops the following fitness attributes:

• Endurance (10/10): Twenty rounds with 200m runs between each calisthenic set creates sustained cardiovascular demand over a very long duration. The vest amplifies heart rate and aerobic stress throughout, making this a near-pure endurance test.
• Stamina (10/10): A total of 100 pull-ups, 200 push-ups, 300 air squats, and 4000 meters of running under load demands extraordinary muscular endurance. Upper body pushing and pulling muscles will be severely taxed across all 20 rounds.
• Speed (4/10): Pacing across 20 rounds is critical to avoid early burnout. Athletes must manage transition speed and run pace strategically, but the sheer volume and vest load prevent true sprint-level cycling throughout the workout.
• Strength (2/10): The weighted vest adds modest load but movements remain bodyweight-based. This tests strength endurance rather than maximal force production; no heavy external loading is present to challenge true strength limits.
• Flexibility (2/10): Standard range of motion is required for pull-ups, push-ups, and air squats. The vest may slightly restrict shoulder mobility during pull-ups, but no extreme or unusual flexibility demands are present in this workout.
• Power (1/10): This workout is a slow, sustained grind rather than an explosive effort. The vest and cumulative fatigue further reduce the ability to generate power, making this almost entirely an endurance and stamina stimulus.

Movements

• Push-Up
• Air Squat
• Run
• Pull-Up

Scaling Options

Vest: Reduce to 10 lb (women) or 14 lb (men), or remove the vest entirely for newer athletes — maintaining movement quality and intensity is more important than the added load. Pull-ups: Sub ring rows, banded pull-ups, or jumping pull-ups with a slow lower. If doing ring rows, set the rings low enough to make them challenging. Push-ups: Sub knee push-ups or elevated push-ups on a box — keep the core engaged and full range of motion. Air squats: These rarely need scaling, but athletes with mobility issues can squat to a target box. Volume: Reduce to 10-15 rounds to keep the workout under 45 minutes for newer athletes. Alternatively, reduce reps to 3 pull-ups, 6 push-ups, 9 squats, and 100m run per round to maintain the 1:2:3 ratio. Run: Sub 250m row or 200m ski erg if running is not an option.

Scaling Explanation

Scale the vest if you cannot complete the first 3 rounds with consistent movement quality — the vest should add challenge, not destroy mechanics. Scale pull-ups if you cannot perform at least 3-5 unbroken at the start of the workout; breaking down to singles by round 5 means the stimulus is lost and injury risk rises. The goal is to keep moving with purpose for the entire workout — not to survive. Prioritize technique over load every time. Target completion time is 35-50 minutes for fit athletes with the vest, and 30-45 minutes for scaled athletes without. If you're projected to go over 60 minutes, reduce rounds or reps. This is a Hero WOD — approach it with respect, pace conservatively, and finish strong.

Intended Stimulus

This is 'Murph' — one of CrossFit's most iconic Hero WODs honoring Navy SEAL Lt. Michael Murphy. The intended stimulus is a long, grinding aerobic effort lasting 35-75+ minutes depending on fitness level and whether you partition the reps. The vest adds constant load stress, turning every movement into a weighted challenge and elevating heart rate throughout. The primary challenge is mental and aerobic — this is a test of your engine, your grit, and your ability to keep moving when everything tells you to stop. Expect muscular fatigue to accumulate across all three planes: pulling, pushing, and squatting. The run bookends the workout (1-mile run at start and end in the full version), but in this 20-round format, the 200m runs serve as active recovery and pacing checkpoints.

Coach Insight

Pacing is everything here — go out too hot and you will pay dearly by round 10. Treat the first 5 rounds as a warm-up, not a race. The most common mistake is blowing through early rounds unbroken and then grinding to a halt mid-workout. Instead, partition from the start: consider 5 pull-ups (unbroken or 3+2), push-ups in sets of 5-5, and squats in sets of 8-7 or unbroken. The 200m run is your reset — use it to shake out your arms, control your breathing, and mentally prepare for the next round. Keep a consistent pace on the run; don't sprint. For push-ups, keep your core tight and hips level — sagging hips under fatigue is the fastest way to lose reps and strain your lower back. For pull-ups, use a kip if you have it, but prioritize full range of motion: chin over bar, full arm extension at the bottom. Air squats should feel like the easiest movement — use them to recover. Hit depth consistently and don't rush. A target split of 90 seconds to 2 minutes per round will put you in the 30-45 minute range. Write your round times on your hand or use a whiteboard to stay accountable.

Benchmark Notes

In a vest, 20 rounds of Cindy (5 pull-ups, 10 push-ups, 15 air squats) and a 200 m run. L5 (54:30-62 min) holds about 2:55 a round. L10 (under 36 min) holds about 1:40 a round.

Modality Profile

4 movements total: Pull-Up (G), Push-Up (G), Air Squat (G) = 3 Gymnastics, Run (M) = 1 Monostructural. 3/4 = 75% G, 1/4 = 25% M, 0% W.

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