Half Marathon Training Plan: Your Complete Guide to 13.1 Miles

Summary: A 12-week half marathon training plan for beginners, covering weekly workouts, race strategy, nutrition, and everything you need to finish your first 13.1 miles.

Read time: 10 min

The half marathon—13.1 miles—has become one of the most popular race distances in the world. It's long enough to feel like a real accomplishment but manageable enough that you can train for it without running taking over your entire life.

Is a Half Marathon Right for You?

Prerequisites

Before starting this plan, you should be able to:

Run 3-4 miles continuously
Exercise 4-5 days per week
Commit 5-8 hours weekly to training (including runs and recovery)

If you're not there yet, spend 6-8 weeks building your base with a 10K training plan first.

Time Commitment

Half marathon training typically requires:

12-16 weeks of structured training
4-5 runs per week
20-40 miles per week at peak training
One long run of 10-12 miles before race day

Training Philosophy

The Three Types of Runs

Easy runs (60-70% of training): The foundation of endurance. Run at a pace where you can hold a conversation. These build aerobic capacity without excessive stress.

Quality runs (20-30% of training): Tempo runs, intervals, and race-pace work. These improve speed, lactate threshold, and running economy.

Long runs (10-15% of training): Weekly runs that gradually extend to 10-12 miles. These build endurance, mental toughness, and race-day confidence.

Key Training Principles

Consistency beats intensity: Four easy miles are better than one hard workout followed by three days off.

Progressive overload: Mileage and intensity increase gradually. No sudden jumps in training load.

Recovery is training: Easy days, rest days, and sleep are when your body adapts and gets stronger.

12-Week Half Marathon Training Plan

Week 1: Foundation

| Day | Workout | |-----|---------| | Monday | Rest or 30 min cross-training | | Tuesday | 3 miles easy | | Wednesday | Rest | | Thursday | 4 miles easy | | Friday | Rest | | Saturday | 5 miles easy (long run) | | Sunday | Rest or 20 min walk |

Weekly total: 12 miles

Week 2: Building

| Day | Workout | |-----|---------| | Monday | Rest or 30 min cross-training | | Tuesday | 3 miles easy | | Wednesday | 3 miles easy | | Thursday | 4 miles with 4 × 1-min pickups | | Friday | Rest | | Saturday | 6 miles easy | | Sunday | Rest |

Weekly total: 16 miles

Week 3: Introduce Tempo

| Day | Workout | |-----|---------| | Monday | Rest or cross-training | | Tuesday | 4 miles easy | | Wednesday | 3 miles easy | | Thursday | 5 miles: 1 warm-up, 3 tempo, 1 cool-down | | Friday | Rest | | Saturday | 7 miles easy | | Sunday | Rest or 20 min walk |

Weekly total: 19 miles

Week 4: Recovery

| Day | Workout | |-----|---------| | Monday | Rest | | Tuesday | 3 miles easy | | Wednesday | Rest or 30 min cross-training | | Thursday | 3 miles easy | | Friday | Rest | | Saturday | 5 miles easy | | Sunday | Rest |

Weekly total: 11 miles

Week 5: Build Volume

| Day | Workout | |-----|---------| | Monday | Rest or cross-training | | Tuesday | 4 miles easy | | Wednesday | 3 miles easy | | Thursday | 5 miles with 5 × 800m at tempo effort, 2-min recovery | | Friday | Rest | | Saturday | 8 miles easy | | Sunday | Rest |

Weekly total: 20 miles

Week 6: Increase Long Run

| Day | Workout | |-----|---------| | Monday | Rest or 30 min cross-training | | Tuesday | 4 miles easy | | Wednesday | 4 miles easy | | Thursday | 5 miles tempo (1 warm-up, 3 at tempo, 1 cool-down) | | Friday | Rest | | Saturday | 9 miles easy | | Sunday | Rest or light walk |

Weekly total: 22 miles

Week 7: Speed Development

| Day | Workout | |-----|---------| | Monday | Rest or cross-training | | Tuesday | 4 miles easy | | Wednesday | 3 miles easy | | Thursday | 6 miles: 1 warm-up, 4 × 1-mile at race pace with 3-min jog recovery, 1 cool-down | | Friday | Rest | | Saturday | 10 miles easy | | Sunday | Rest |

Weekly total: 23 miles

Week 8: Recovery

| Day | Workout | |-----|---------| | Monday | Rest | | Tuesday | 3 miles easy | | Wednesday | 3 miles easy | | Thursday | 4 miles easy with 4 × 30-sec strides | | Friday | Rest | | Saturday | 6 miles easy | | Sunday | Rest |

Weekly total: 16 miles

Week 9: Peak Building

| Day | Workout | |-----|---------| | Monday | Rest or 30 min cross-training | | Tuesday | 5 miles easy | | Wednesday | 4 miles easy | | Thursday | 7 miles: 2 warm-up, 4 tempo, 1 cool-down | | Friday | Rest | | Saturday | 11 miles easy | | Sunday | Rest |

Weekly total: 27 miles

Week 10: Peak Week

| Day | Workout | |-----|---------| | Monday | Rest or cross-training | | Tuesday | 5 miles easy | | Wednesday | 4 miles easy | | Thursday | 6 miles: 1 warm-up, 2 × 2-mile at race pace with 4-min recovery, 1 cool-down | | Friday | Rest | | Saturday | 12 miles easy (longest run) | | Sunday | Rest |

Weekly total: 27 miles

Week 11: Taper Begins

| Day | Workout | |-----|---------| | Monday | Rest | | Tuesday | 4 miles easy | | Wednesday | 3 miles easy | | Thursday | 5 miles: 1 warm-up, 3 at race pace, 1 cool-down | | Friday | Rest | | Saturday | 8 miles easy | | Sunday | Rest or light walk |

Weekly total: 20 miles

Week 12: Race Week

| Day | Workout | |-----|---------| | Monday | 3 miles very easy | | Tuesday | Rest or 2 miles easy | | Wednesday | 3 miles with 4 × 30-sec strides | | Thursday | 2 miles very easy | | Friday | Rest—hydrate, prepare gear | | Saturday | 15 min shakeout jog (optional) | | Sunday | RACE DAY: Half Marathon! |

Weekly total: 8-10 miles + race

Understanding Pace

Training Paces

Easy pace: 1:30-2:00 per mile slower than goal race pace. Should feel comfortable.

Tempo pace: 30-45 seconds per mile slower than 5K race pace. "Comfortably hard."

Race pace: Your goal half marathon pace. Should feel sustainable but focused.

Interval pace: Close to 5K effort. Hard but controlled.

Finding Your Goal Pace

If you've run a recent race:

5K time × 2.2 = estimated half marathon time
10K time × 2.1 = estimated half marathon time

| Recent 5K | Predicted Half | Per-Mile Pace | |-----------|----------------|---------------| | 25:00 | 1:55:00 | 8:47 | | 27:00 | 2:04:00 | 9:28 | | 30:00 | 2:18:00 | 10:32 | | 33:00 | 2:32:00 | 11:36 | | 36:00 | 2:46:00 | 12:40 |

Race Day Strategy

The First Three Miles

Start slow. The biggest mistake in half marathons is going out too fast. Adrenaline, crowds, and excitement will make your goal pace feel easy at first.

Target: 10-15 seconds per mile slower than goal pace for miles 1-3.

Miles 4-10: The Working Miles

Settle in. Find your rhythm. This is the meat of the race—steady, focused running.

Target: Goal pace. Don't speed up or slow down significantly.

Mental strategy: Break it into segments. Miles 4-6, then 7-10. Don't think about the finish yet.

Miles 10-13.1: The Finish

This is what you trained for. Everything in the last three miles will feel harder than training prepared you for. This is normal.

Target: If you have energy, start working at mile 10. If you're struggling, focus on maintaining effort (pace may slow slightly).

Mental strategy: One mile at a time. Then one half-mile. Then finish.

Nutrition for Half Marathon Training

Daily Nutrition

Carbohydrates: Your primary fuel for running. Include in every meal—rice, pasta, bread, oats, potatoes, fruits.

Protein: Essential for recovery. Aim for 0.6-0.8 grams per pound of body weight daily.

Fats: Important for long-run fuel and hormone function. Don't restrict fat during training.

Hydration: Drink throughout the day. Urine should be light yellow, not clear or dark.

Fueling Your Long Runs

Under 75 minutes: Water is sufficient. No food needed.

75-90 minutes: Consider 15-20 grams of carbs around the 45-minute mark.

Over 90 minutes: You'll need fuel. Practice with gels, chews, or real food during training.

Race Day Nutrition

Night before: Carb-focused dinner by 6-7 PM. Something familiar—not a new restaurant or cuisine.

Morning: Eat 2-3 hours before start. 200-400 calories of easily digestible carbs.

During race: Plan to take in 30-60 grams of carbs per hour after the first hour. Most runners use gels every 45-60 minutes starting around mile 5.

Practice everything in training. No experiments on race day.

Common Training Mistakes

Running Every Run Hard

If you run easy days at moderate effort, you won't recover enough for quality days to be truly hard. Result: mediocre training across the board.

Fix: Easy days should feel too easy. That's the point.

Skipping the Long Run

The weekly long run builds specific half marathon endurance. Missing multiple long runs significantly impacts race performance.

Fix: Schedule long runs like appointments. Protect the time.

Not Tapering

Reducing mileage the final 2-3 weeks feels wrong, but it lets your body consolidate fitness gains.

Fix: Trust the taper. You won't lose fitness in two weeks.

Trying New Things on Race Day

New shoes, new food, new strategies—all should be tested during training.

Fix: Race day should feel familiar. Practice everything.

Injury Prevention

Warning Signs

Normal: General muscle fatigue, mild soreness that improves with easy running.

Concerning: Pain that worsens during running, joint pain, sharp or localized pain, pain that limps your gait.

Staying Healthy

Don't increase mileage more than 10% per week—this plan is designed with built-in recovery weeks.

Strength train 2x per week: Focus on hips, glutes, and core. 20-30 minutes is sufficient.

Sleep 7-9 hours: Recovery happens during sleep. Prioritize it.

Address issues early: A few days off now prevents weeks off later.

Essential Strength Exercises

Single-leg squats (assisted): Hold a wall or chair. Lower down on one leg, keeping knee over toes.

Hip hikes: Stand on a step. Drop one hip below the step, then raise it above level.

Dead bugs: Lie on back, extend opposite arm and leg while keeping lower back pressed to floor.

Eccentric calf raises: Rise on both feet, lower slowly on one foot.

Side plank: Hold for 30-45 seconds each side.

The Mental Game

Building Mental Toughness

Half marathon training is as much mental as physical. Every long run builds mental resilience.

Practice discomfort: The hard parts of training teach you to push through the hard parts of racing.

Develop mantras: Short phrases for when it gets tough. "Relax and run." "One mile at a time." "I trained for this."

Visualize race day: Imagine yourself handling the hard miles and crossing the finish line.

Managing Race Day Nerves

Pre-race anxiety is normal and can actually improve performance when channeled properly.

Focus on what you control: Your preparation, your pacing, your attitude.

Accept imperfection: Something will go differently than planned. Adjust and keep moving.

After the Race

Immediate Recovery

Keep walking: 10-15 minutes post-finish. Don't sit immediately.

Hydrate and eat: Water, electrolytes, and food within 30 minutes.

Gentle stretching: After you've cooled down, do light stretches if desired.

The Following Week

Days 1-3: Very easy walking, possibly light jogging if legs feel good. No running if anything hurts.

Days 4-7: Easy 2-3 mile runs if desired. Listen to your body.

Don't race or do hard workouts for at least 2-3 weeks.

What's Next?

After your first half marathon:

Another half marathon: Chase a PR with a 16-week plan
Full marathon: The logical next step if you loved the distance
Shorter races: Use your fitness for fast 5K and 10K times
Rest and enjoy: It's okay to run for fun without a goal race

Frequently Asked Questions

How do I know if I'm running easy enough? The talk test: Can you speak in complete sentences? That's easy pace.

What if I miss a workout? One missed workout doesn't matter. If you miss several in a row due to life circumstances, just pick up where the plan is—don't try to make up missed runs.

Should I run the full 13.1 miles before race day? No. Your longest training run should be 10-12 miles. The fitness to complete 13.1 comes from cumulative training, not one long run.

What about walking during the race? Planned walk breaks are a valid strategy. Run/walk approaches have helped many people complete half marathons successfully.

Is it okay to run with music? During training, absolutely. During racing, check if the event allows headphones. Even if allowed, consider running unplugged to stay aware of your body and surroundings.

The bottom line: A half marathon is achievable with 12-16 weeks of consistent training. Follow this plan, respect recovery, practice your nutrition, and you'll cross the finish line ready to call yourself a half marathoner.