Beginner Marathon Training Plan: A Complete Training Schedule for Your First 42.2K

Before You Start: Minimum Requirements

Ideally, you should already be able to:

• Run or run–walk for 30 minutes continuously.
• Train 3–4 days per week.
• Recover well between sessions.

If not, spend 4–6 weeks building an aerobic base first.

How Long Should Your Marathon Training Schedule Be?

This plan runs 16 weeks, which suits most beginners who already meet the minimum requirements above. But "beginner" covers a wide range of starting fitness, so treat 16 weeks as the default rather than the only option:

• 12-week schedule: Only sensible if you're already running 20–30 km per week comfortably; compresses base building and peaks earlier.
• 16-week plan (this guide): The standard beginner marathon training programme — enough time to build from a modest base to race-ready without rushing.
• 20–26-week plan: The right call for complete beginners or anyone returning from a long break. Add 4–10 extra weeks of easy running and the aerobic-base-building phase described above onto the front of this 16-week block; the structure and progression stay identical, you're just giving your joints and tendons more time to adapt before the harder middle weeks start.

Whichever length you choose, the training principles below don't change — only the runway you give yourself to reach them. If you're targeting an autumn race, see our guide on when to start training for an autumn marathon for how the base-building weeks before this plan begins should look.

Key Principles of Marathon Training

• Most runs are easy: 70–90% of training should feel comfortable.
• Long run is king: Builds endurance and mental resilience.
• Progress gradually: Increase mileage slowly to avoid injury.
• Consistency beats intensity: Regular running matters more than fast running.

16-Week Beginner Marathon Training Plan

Weeks 1–4: Base Building

• 3–4 runs per week
• Easy runs: 20–40 minutes
• Long run: 5–10 km
• Focus: building consistency and aerobic base

Weeks 5–8: Building Endurance

• 4 runs per week
• Easy runs: 30–45 minutes
• Long run: 10–18 km
• Optional: light tempo effort (10–15 minutes)

Weeks 9–12: Peak Endurance Phase

• 4–5 runs per week
• Easy runs: 35–60 minutes
• Long run: 18–30 km
• Include one steady/tempo run per week

Weeks 13–14: Peak Long Runs

• 4 runs per week
• Long run: 28–32 km (maximum)
• Reduce intensity slightly to protect recovery

Weeks 15–16: Taper

• Reduce total mileage by 30–60%
• Short, easy runs only
• Keep legs fresh and rested

For a fuller breakdown of how to structure these final weeks—and why cutting volume rather than intensity is what actually works—see our dedicated marathon taper guide.

Example Weekly Schedule

• Monday – Rest
• Tuesday – Easy run
• Wednesday – Rest or strength training
• Thursday – Easy or tempo run
• Friday – Rest
• Saturday – Easy run
• Sunday – Long run

Long Run Progression (Most Important Part)

Your long run builds marathon-specific endurance. Increase gradually and avoid forcing pace.

• Start: 5–8 km
• Mid-plan: 12–20 km
• Peak: 28–32 km

Long runs should always feel slow and controlled.

Pace Strategy

• Easy runs: conversational pace
• Long runs: even slower than easy pace
• Tempo runs: comfortably hard, controlled breathing

If unsure, slow down. Most beginners run too fast early on.

Strength Training (Optional but Helpful)

1–2 sessions per week can improve injury resistance:

• Squats and lunges
• Glute bridges
• Core stability work
• Calf strengthening

Common Beginner Mistakes

• Running easy days too fast.
• Skipping long runs.
• Increasing mileage too quickly.
• Ignoring recovery and rest.

Fueling and Hydration Basics

• Practice eating and drinking during long runs.
• Use water + electrolytes for runs over 90 minutes.
• Try gels or carbs during long runs above 20 km.

In the final days before the race itself, that everyday fuelling practice gives way to a more deliberate approach—see our guide to carb loading for a marathon for how much to eat and when.

How to Know You’re Ready for Race Day

• You can comfortably run 25–30 km in training.
• You recover well after long runs.
• You can run multiple days per week without fatigue buildup.

Frequently Asked Questions

How long does it take to train for a marathon?

Most beginners need 12–20 weeks depending on current fitness level, though a 26-week schedule is a safer choice for complete beginners — see "How Long Should Your Marathon Training Schedule Be?" above.

How do I train for a marathon as a beginner?

Follow a structured plan that builds your long run gradually, keeps most running easy, and includes rest or cross-training days — exactly the 16-week schedule set out above. Consistency over months matters far more than any single hard session.

What is a good marathon training programme for beginners?

One that grows your weekly mileage and long run gradually (no more than roughly 10% at a time), keeps 70–90% of running easy, and includes a proper taper. The plan and weekly schedule on this page follow that structure.

Can I walk during a marathon?

Yes. Many beginners use run–walk strategies to complete the distance safely.

Do I need speed work?

No. A beginner marathon plan should focus mostly on easy running and long runs.

What does an easy marathon training plan look like?

An easy, full marathon training plan for beginners front-loads recovery: three to four runs a week, the vast majority run at a conversational pace, and a long run that grows by no more than about 10% at a time. The 16-week schedule on this page follows that structure end to end; if you want it easier still, stretch it to 20–26 weeks using the extended option above rather than adding extra hard sessions.

Final Thoughts

Marathon training is about patience, not intensity. If you stay consistent, run mostly easy, and build your long runs gradually, your body will adapt. Completing your first marathon is less about speed and more about steady preparation and smart training.