Workout Description

Why This Workout Is Hard

While neither 400m runs nor burpees are individually challenging, this combination creates significant metabolic stress with no built-in rest. The 21 burpees immediately after running means athletes are already breathing heavy, and three rounds creates cumulative fatigue. Average athletes will need to break up burpees and pace the runs. Most will finish in 12-15 minutes of sustained discomfort.

Benchmark Times for Surfer on Acid

• Elite: <6:00
• Advanced: 7:00-8:00
• Intermediate: 9:00-10:00
• Beginner: >18:00

Training Focus

This workout develops the following fitness attributes:

• Endurance (8/10): The combination of running and burpees creates significant cardiovascular demand across three rounds, with limited rest opportunities between movements.
• Stamina (7/10): High-volume burpees (63 total) combined with running tests muscular endurance, particularly in the shoulders, core, and legs.
• Speed (6/10): Quick transitions between movements and maintaining a fast burpee cycle rate are important for performance.
• Flexibility (4/10): Burpees require moderate hip and shoulder mobility, while running demands basic range of motion.
• Power (3/10): Some explosive element in the burpee push-up to stand, but not primarily a power-focused workout.
• Strength (2/10): Primarily bodyweight movements that don't significantly challenge maximal strength, though burpees require some pushing strength.

Movements

• Burpee
• Run

Scaling Options

Run: Reduce to 200m or substitute 500m row/bike. Burpees: Step-back burpees instead of jumping, reduce to 15 or 12 reps per round, or elevate hands on box/bench for reduced range of motion. For significant scaling, consider 2 rounds instead of 3. Time cap at 25 minutes for scaled versions.

Scaling Explanation

Scale if unable to perform 10+ unbroken burpees when fresh or if 400m run takes over 2:30. Priority is maintaining consistent movement with good form throughout all rounds. Target time domain should remain 12-18 minutes regardless of scaling. Athletes should finish each round of burpees in no more than 3-4 sets. If burpees take more than 3 minutes per round or form deteriorates significantly, scaling is needed.

Intended Stimulus

Moderate-length glycolytic conditioning workout targeting the 12-18 minute time domain. Primary focus is on aerobic capacity with glycolytic spikes during burpee sets. The workout challenges both cardiovascular endurance and full-body muscle endurance, with a significant mental component due to the high-volume burpees.

Coach Insight

Break up burpees early into manageable sets (7-7-7 or 6-5-5-5) to maintain consistent pace. Run at 75-80% effort - you should be able to breathe through your nose. Quick transitions between movements are crucial. Keep burpee technique efficient: land soft, step or jump back (based on fatigue), minimal pause at bottom, and pop up with purpose. Common mistake is going too hard on first round, leading to significant slowdown by round 3.

Benchmark Notes

This workout is structurally similar to Helen (3 rounds of 400m run + gymnastics), but with burpees instead of KB swings and pull-ups. Analysis: Per Round: - 400m Run: 75-90s (fresh) with fatigue multipliers 1.0x, 1.1x, 1.2x - 21 Burpees: 21 × 3.5s = 73.5s (fresh) with similar fatigue progression - Transitions: ~5s between movements Round 1: 75s + 73.5s + 5s = 153.5s Round 2: (75s × 1.1) + (73.5s × 1.1) + 5s = 168s Round 3: (75s × 1.2) + (73.5s × 1.2) + 5s = 183s Total for elite (L10): ~505s Comparing to Helen benchmark (L10 = 450-510s for men), this should be slightly faster since burpees are less taxing than the combination of heavy KB swings and pull-ups. Adjusting down ~15% from Helen's benchmarks. Recap: Male L10: 6:00 (360s) Male L5: 10:00 (600s) Male L1: 18:00 (1080s) Female L10: 7:00 (420s) Female L5: 11:00 (660s) Female L1: 20:00 (1200s)

Modality Profile

Run is Monostructural (M), Burpee is Gymnastics (G). With two movements split across two modalities, this results in a 50/50 split between G and M.

Similar Workouts to Surfer on Acid

If you enjoy Surfer on Acid, you might also like these similar CrossFit WODs:

• Natalie Corona (84% similar) - AMRAP (with a Partner) in 22 minutes Partner A, perform AMRAP of: 20 Sit-Ups 20 Burpees ...while Pa...
• The Big Nasty (84% similar) - AMRAP in 30 minutes 150 meter Run 20 Box Step-Ups (24/20 in) 20 Walking Lunges 75 meter Run 10 Broad...
• Rowing in the Deep (84% similar) - For Time 15-14-13-12-11-10-9-8-7-6-5-4-3-2-1 reps of: Calorie Row Burpees...
• Icarus (84% similar) - For time: 100 Double-Unders 30 Toes-to-Bars 100 Double-Unders 40 Pull-Ups 100 Double-Unders 50 Burpe...
• AGQ 22.3 (83% similar) - AMRAP in 10 minutes: 1 Rope Climb (15 ft) 2x50 foot Shuttle Runs Then 2 Rope Climbs (15 ft) 4x50 foo...
• Wheeler (83% similar) - For Time 21 Flutter Kicks (4-count) 2,100 meter Run Then, 4 rounds of: 10 Pull-Ups 22 Sit-Ups 15 Pu...
• Regionals 11.1 (83% similar) - For time: 1000 meter Run 30 Handstand Push-Ups 1000 meter Row...
• Canine Rex (83% similar) - For Time 7 rounds of: 500 meter run 14 Air Squats 14 Lunges 14 Sit-Ups 14 Squat Jumps Directly into:...

These WODs similar to Surfer on Acid share comparable training demands, time domains, and movement patterns.