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Delta Rep AFT Guide

Improve Your AFT Sprint-Drag-Carry

The Sprint-Drag-Carry (SDC) is one of the most physically demanding events on the Army Fitness Test. It measures acceleration, power, anaerobic conditioning, agility, work capacity, and the ability to recover while moving under fatigue.

Many soldiers struggle with the SDC because it exposes weaknesses in conditioning, lower-body power, grip strength, and pacing all at once.

The good news is that the SDC usually improves very quickly when training includes sprint work, loaded carries, and event-specific conditioning.

Event

SDC

Sprint-Drag-Carry

Video breakdowns

Build the qualities that transfer to the Sprint-Drag-Carry with ATG squats for sled power, 400m repeats, sled pushes, sled pulls, and SDC repeats.

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What this event measures

The Sprint-Drag-Carry primarily tests:

  • Anaerobic conditioning
  • Acceleration
  • Lower-body power
  • Grip strength
  • Agility
  • Fatigue resistance
  • Work capacity

The event forces soldiers to repeatedly produce power while recovering quickly between high-intensity efforts.

Strong SDC performance usually comes from balancing:

  • speed
  • conditioning
  • muscular endurance
  • efficient movement mechanics

How to improve

#1 Improve conditioning

Most soldiers lose the most time because of conditioning limitations, not strength. Sprint intervals, sled work, circuits, and repeated efforts are extremely effective.

#2 Train acceleration

Short sprint work improves explosive power and first-step speed. Focus on aggressive acceleration and powerful leg drive.

#3 Build stronger legs

Lower-body strength transfers heavily to the sled drag and carries. Exercises that help include:

  • Squats
  • Deadlifts
  • Lunges
  • Step-ups
  • Sled pushes
  • Farmer carries

#4 Practice transitions

Efficient movement between phases can save valuable seconds. Smooth transitions matter more than most soldiers realize.

#5 Train under fatigue

The SDC rewards the ability to recover while continuing to move explosively. Conditioning sessions should occasionally mimic this fatigue.

Common mistakes

#1 Starting too aggressively

Many soldiers sprint the first section too hard and completely fade later in the event.

#2 Poor sled drag mechanics

Standing too upright and taking short steps wastes energy during the drag.

#3 Weak lateral movement

Crossing the feet during the shuffle slows movement and wastes time.

#4 Neglecting conditioning

Heavy lifting alone rarely creates a strong SDC score.

#5 Training only the full event

Repeatedly maxing full SDC attempts creates excessive fatigue. Focus on improving individual qualities instead.

Training example

Example SDC-focused conditioning session:

  1. 50m Sprint
    5 rounds
  2. Heavy Sled Drag
    5 rounds x 25m
  3. Farmer Carries
    4 rounds x 40m
  4. Lateral Shuffle Intervals
    5 rounds
  5. Assault Bike or Row
    30 seconds hard / 60 seconds easy x 8 rounds
  6. Easy cooldown jog

This type of training improves:

  • acceleration
  • work capacity
  • fatigue resistance
  • transition efficiency
  • lower-body conditioning

FAQ

What is the hardest AFT event?+
The Sprint-Drag-Carry is commonly considered the hardest AFT event because it combines sprinting, strength, agility, and conditioning under fatigue.
How often should I train for the SDC?+
Most soldiers improve well with 2-3 conditioning-focused sessions per week combined with lower-body strength training.
What improves SDC times the fastest?+
Better conditioning, stronger legs, smoother transitions, and repeated sprint training usually produce the fastest improvements.

Next step

Calculate your current AFT score, identify weak points, and follow a structured military fitness plan designed specifically for improving Army Fitness Test performance.

Use the AFT Calculator to see where you currently stand, then use Delta Rep to build a plan tailored to your goals.

Other AFT event guides

MDL

Maximum Deadlift

HRP

Hand-Release Push-Up

PLK

Plank

2MR

2-Mile Run