How to Get Fit Enough to Join the Army: A 16-Week Training Plan

Getting fit enough to join the army is a specific goal, and specific goals require specific preparation. Generic gym programmes won't prepare you for the demands of ADSC and basic training. This 16-week plan is designed to build the run fitness, upper body strength, and functional capacity you'll need to pass selection and arrive at basic training ready to perform.

Before You Start: Baseline Assessment

On day one, test yourself honestly:

• 1.5 mile timed run (on a track or GPS watch)
• Maximum press-ups in 2 minutes
• Maximum sit-ups in 2 minutes
• Maximum pull-ups (dead hang, full extension each rep)

Record the numbers. You'll retest at weeks 8 and 16. Progress requires a baseline — don't skip this step.

Phase 1 — Weeks 1–4: Build the Base

The first month is about laying foundations, not breaking personal bests. The biggest mistake candidates make is going too hard too soon and picking up an injury that sets them back 4–6 weeks.

• Running: 3 times per week — two easy 20–30 minute runs at conversational pace, one 15-minute tempo effort at slightly uncomfortable pace. Total weekly mileage: 10–15km
• Strength: Press-ups and sit-ups daily. Start at 60–70% of your maximum — three sets each morning. Build from there
• Pull-ups: 3–4 times per week. Even if you can only do 2–3, practice the movement pattern daily
• Rest: Two full rest days per week. Non-negotiable in this phase

Phase 2 — Weeks 5–8: Add Intensity

The base is built. Now add quality to the running and volume to the strength work.

• Running: 4 times per week — add one interval session (6–8 x 400m at faster than target pace, 90 seconds recovery). Increase weekly mileage to 20–25km
• Strength: Increase press-up and sit-up volume significantly. Target sets of 30+ press-ups unbroken. Add dips and rowing movements if available
• Loaded carries: Introduce weighted carries — two heavy bags, 15–20kg each, over 200m. Timed. This replicates the jerry can carry directly
• Retest at week 8. You should see clear improvement across all metrics

Phase 3 — Weeks 9–12: Race-Specific Training

Everything now sharpens toward the specific demands of PJFT and ADSC.

• Running: The weekly interval session becomes 800m repeats at your target PJFT pace or faster. Start practising your 2.4km time trial — aim to run it at 95% effort once per week
• Strength: Begin testing yourself against ADSC minimum standards. Hit the numbers consistently before you arrive
• Simulate assessment conditions: Do your press-up and sit-up tests when fatigued — after a run, not fresh. ADSC doesn't always happen in ideal conditions

Phase 4 — Weeks 13–16: Peak and Polish

Final sharpening. Don't introduce anything new — refine what you've built.

• Run times should be consistently under your target. If not, revert to more interval work
• Strength numbers should exceed minimums by a clear margin
• Week 15: reduce volume slightly. Don't arrive at ADSC fatigued from over-training the week before
• Week 16: light maintenance sessions only. Be rested, be ready

Nutrition and Recovery

Training for army selection is a serious physical undertaking. Fuel it properly:

• Protein: 1.6–2g per kg of bodyweight daily — essential for muscle repair and strength gains
• Carbohydrates: don't restrict them. Running performance degrades sharply on low carbohydrate intake
• Sleep: 8 hours minimum. More of your adaptation happens during sleep than during training
• Hydration: consistent daily intake, not just around sessions

Getting Support in Swindon

If you're in Swindon or Wiltshire and preparing for army selection, Frontline Fitness runs coached outdoor sessions designed around exactly this kind of functional fitness preparation. Led by an instructor with a Royal Marines background, sessions cover the running, strength, and conditioning elements directly relevant to PJFT and ADSC. First session is free — come with your goal and we'll train specifically toward it.