Workout Description

Why This Workout Is Easy

This workout is fundamentally a 5x400m run with generous 2-minute recovery between rounds. The 400m run is a basic, non-technical movement that most CrossFit athletes can complete comfortably. The 2-minute rest period is substantial—allowing heart rate recovery and mental reset. Total workout time is approximately 20-25 minutes. There's no weight, no skill complexity, no fatigue accumulation across rounds, and no movement interference. Average athletes will complete this as prescribed without scaling.

Benchmark Times for Run Intervals

• Elite: <10:30
• Advanced: 11:30-12:45
• Intermediate: 14:15-15:45
• Beginner: >25:45

Training Focus

This workout develops the following fitness attributes:

• Endurance (8/10): Five 400m runs with 2-minute recovery between rounds directly challenges cardiovascular capacity. The repeated aerobic efforts build sustained aerobic power and oxygen utilization across multiple efforts.
• Speed (7/10): Each 400m run demands fast cycling and quick leg turnover. Pacing strategy and maintaining speed across five efforts is critical for performance.
• Power (6/10): 400m runs at competitive pace require explosive leg drive and acceleration, particularly at the start and finish of each effort. Power output is significant but not the primary focus.
• Stamina (4/10): Each 400m run is a single effort lasting 1-3 minutes depending on fitness level. Limited muscular endurance demand since running is the sole movement with adequate recovery between rounds.
• Flexibility (2/10): Running demands basic hip and ankle mobility. No extreme range of motion requirements; standard running mechanics suffice for this stimulus.
• Strength (1/10): Running requires minimal force production compared to loaded movements. No external load or maximal strength component present in this workout.

Movements

• Run

Scaling Options

For athletes who struggle to run: substitute 500m row, 400m ski erg, or 1-minute assault bike sprint as a 1-to-1 cardio swap. Reduce volume to 3-4 rounds if the athlete is newer to interval training or managing injury. Shorten the distance to 200m per round for athletes with significant running limitations or those returning from lower-body injury. Increase rest to 3 minutes between rounds if 2 minutes is insufficient for partial recovery and splits are degrading more than 20-30 seconds round to round.

Scaling Explanation

Scale if you cannot sustain a hard running effort for 400m, if you have a lower-body injury that affects running mechanics, or if your splits are falling apart by round 3 (more than 30+ seconds slower than round 1). The priority here is intensity — each round should feel hard and fast. A scaled version that preserves that sprint stimulus is far more valuable than grinding through Rx distance at a slow jog. Target effort: 85-95% max heart rate per round. If you're not breathing hard and feeling the burn, you're not working hard enough.

Intended Stimulus

This is a sprint interval workout targeting speed, power, and anaerobic capacity. Each 400m should be a near-maximal effort lasting roughly 90 seconds to 2.5 minutes depending on the athlete. The 2-minute rest allows partial recovery so you can push hard on every round. Think of this as repeated sprint training — the goal is to maintain consistent, fast splits across all 5 rounds, not to pace conservatively. Primary challenge is mental: committing to a hard effort when your legs are already burning from the previous round.

Coach Insight

Treat each 400m as its own race. Aim to keep your splits within 10-15 seconds of each other across all 5 rounds — if round 1 is 1:30, rounds 4 and 5 should still be close to that. Don't go out so hot in round 1 that you fall apart by round 3. Find a strong, controlled pace in the first 200m, then push the final 100-150m. Drive your arms, stay tall, and breathe rhythmically. Common mistake: going all-out in round 1 and dying in rounds 3-5, turning a sprint workout into a slow jog. Use the 2-minute rest actively — walk, shake out your legs, control your breathing — but be ready to go when the clock hits. Track your splits and compete against yourself.

Benchmark Notes

Pure aerobic running capacity across 5 x 400m intervals with 2-min rest; the limiter is sustained running pace under fatigue. L5 (~16.5 min total, ~2:00/400m average) reflects a solid intermediate CrossFitter who runs 400s in the 1:45-2:10 range with some fade. Elite athletes hold sub-1:20 per 400m consistently.

Modality Profile

Run is a cyclical cardio movement classified as Monostructural (M). Single movement workout = 100% of that modality.