16-Week Half Marathon Training Plan (Beginner Level)

Plan Overview

Target Audience: First-time half marathoners. You have run a 5K or 10K, you are comfortable covering 4-5 miles, and you have been running consistently for at least 2-3 months. Goal: Finish the half marathon (13.1 miles) strong and healthy in 16 weeks Weekly Mileage: 19-33 miles (peak 33) Running Days: 4-5 per week Peak Long Run: 12 miles Experience Required: Able to run 40-45 minutes continuously without walking. That is it.

This is the sibling plan to the 16-week intermediate half marathon plan. If you already train 30-35 miles per week and have raced this distance, go there instead. If this is your first half, start here.

Before You Start

Set the Right Goal:
- Your goal for a first half marathon is to finish strong and healthy.
- Time goals are for your second one. Really.
- "Strong" means you are still running well at mile 11, not surviving it.
Establish Your Baseline:
- You should be running 3-4 days per week already, roughly 12-18 miles per week.
- You should have covered 4-5 miles in one run at least once in the past month.
- If you cannot do this yet, spend 4-6 weeks building to it before starting Week 1. Starting this plan under-prepared is the single most common route to a stress fracture.
Know Your Two Paces (that is all you need):
- Easy: Conversational. You can speak in full sentences. Zone 2, 60-70% max HR.
- Steady: Slightly firmer but still controlled. Zone 3, 70-80% max HR. Used sparingly.
- You do not need interval pace, VO2max pace, or a VDOT score for this plan. You need aerobic fitness and time on your feet.
- See heart-rate zones and the HR zones table if you want the detail.
Schedule Your Race:
- Pick a half marathon 16 weeks out and register. A paid entry is a commitment device.
- Optional: a 5K or 10K tune-up race in Week 12 to practice race-day logistics.
Get Your Shoes Sorted:
- One pair of well-fitting running shoes with fewer than 300 miles on them.
- Rotating two pairs is better if you can afford it.

Training Philosophy

The half marathon is an aerobic event. For a first-timer, essentially 100% of the improvement you need comes from consistent easy aerobic running and a steadily growing long run. Not from speedwork.

The four principles this plan is built on:

Easy means EASY. This is the principle beginners break most often. If you cannot hold a conversation, you are running too fast. Most first-timers run their easy days at a moderate, mildly uncomfortable pace, accumulate fatigue for 16 weeks, and arrive at the start line already worn down. Slow down. See the easy/hard rule.
Long runs are run SLOW - slower than goal race pace, not at it. This feels wrong. If you want to race 13.1 at 10:00/mile, your long run should be at 10:45-11:30/mile. The long run's job is to spend time on your feet and stimulate aerobic adaptations - mitochondria, capillaries, fat oxidation. Those adaptations come from duration, not intensity. Running long runs at goal pace makes them a race, wrecks the following week, and teaches you nothing you need. See the aerobic system.
Build volume before intensity, and never raise both in the same week. This plan builds mileage first (Weeks 1-8), then adds a little controlled steady effort (Weeks 9-15). It never asks you to run more miles and harder miles in the same week.
Every 4th week is a down week. Weeks 4, 8, and 12 cut volume by 20-25%. Adaptation happens during recovery, not during the hard work. The down week is not optional and it is not a sign of weakness. See recovery.

Training Phases:

Weeks 1-4: Foundation (get consistent, get comfortable)
Weeks 5-8: Base building (grow the long run)
Weeks 9-12: Endurance development (long run reaches 11 miles, introduce steady effort)
Weeks 13-15: Peak and early taper (longest run, then cut back)
Week 16: Race week

The 16-Week Plan

Weekly template:

Monday: Rest or cross-train (bike, swim, walk - 30-40 min easy)
Tuesday: Easy run
Wednesday: Easy run
Thursday: Easy run
Friday: Rest
Saturday: Long run (slow)
Sunday: Recovery run (very easy) or rest

Shift days to fit your life. Just keep one rest day before the long run and never stack two demanding days back to back.

Phase 1: Foundation (Weeks 1-4)

Week 1: Get Consistent (19 miles)

Monday: Rest or cross-train
Tuesday: Easy 4 miles
Wednesday: Easy 3 miles
Thursday: Easy 4 miles
Friday: Rest
Saturday: Long run 5 miles easy
Sunday: Recovery 3 miles very easy

Week 2: Settle In (20 miles)

Monday: Rest or cross-train
Tuesday: Easy 4 miles
Wednesday: Easy 4 miles
Thursday: Easy 3 miles
Friday: Rest
Saturday: Long run 6 miles easy
Sunday: Recovery 3 miles very easy

Week 3: First Build (22 miles)

Monday: Rest or cross-train
Tuesday: Easy 4 miles
Wednesday: Easy 4 miles + 4x100m strides
Thursday: Easy 4 miles
Friday: Rest
Saturday: Long run 7 miles easy
Sunday: Recovery 3 miles very easy

Week 4: Down Week (17 miles)

Monday: Rest
Tuesday: Easy 3 miles
Wednesday: Easy 4 miles
Thursday: Easy 3 miles
Friday: Rest
Saturday: Long run 5 miles easy
Sunday: Recovery 2 miles very easy

Phase 2: Base Building (Weeks 5-8)

Week 5: Grow the Long Run (23 miles)

Monday: Rest or cross-train
Tuesday: Easy 4 miles
Wednesday: Easy 4 miles + 4x100m strides
Thursday: Easy 4 miles
Friday: Rest
Saturday: Long run 8 miles easy
Sunday: Recovery 3 miles very easy

Week 6: Longer Still (25 miles)

Monday: Rest or cross-train
Tuesday: Easy 5 miles
Wednesday: Easy 4 miles + 6x100m strides
Thursday: Easy 4 miles
Friday: Rest
Saturday: Long run 9 miles easy (start practicing fueling - see below)
Sunday: Recovery 3 miles very easy

Week 7: Double Digits (27 miles)

Monday: Rest or cross-train
Tuesday: Easy 5 miles
Wednesday: Easy 5 miles + 6x100m strides
Thursday: Easy 4 miles
Friday: Rest
Saturday: Long run 10 miles easy (fuel at 45 min, then every 30-40 min)
Sunday: Recovery 3 miles very easy

Week 8: Down Week (20 miles)

Monday: Rest
Tuesday: Easy 4 miles
Wednesday: Easy 4 miles + 4x100m strides
Thursday: Easy 3 miles
Friday: Rest
Saturday: Long run 6 miles easy
Sunday: Recovery 3 miles very easy

Phase 3: Endurance Development (Weeks 9-12)

Steady-effort work appears here for the first time. It is a small dose. If a steady segment leaves you gasping, you are running it too hard - it should feel controlled, like an effort you could hold for an hour.

Week 9: Introduce Steady Effort (29 miles)

Monday: Rest or cross-train
Tuesday: Easy 6 miles
Wednesday: Steady - 1mi easy warmup + 3mi at steady effort + 1mi easy cooldown = 5 miles
Thursday: Easy 5 miles
Friday: Rest
Saturday: Long run 10 miles easy
Sunday: Recovery 3 miles very easy

Week 10: Build Both Ends (31 miles)

Monday: Rest or cross-train
Tuesday: Easy 6 miles
Wednesday: Steady - 1mi easy warmup + 3mi at steady effort + 1mi easy cooldown = 5 miles
Thursday: Easy 6 miles
Friday: Rest
Saturday: Long run 11 miles easy (full fueling rehearsal)
Sunday: Recovery 3 miles very easy

Week 11: Longest So Far (33 miles)

Monday: Rest or cross-train
Tuesday: Easy 7 miles
Wednesday: Steady - 1mi easy warmup + 4mi at steady effort + 1mi easy cooldown = 6 miles
Thursday: Easy 5 miles
Friday: Rest
Saturday: Long run 11 miles (first 9 easy, last 2 at goal race pace to see how it feels)
Sunday: Recovery 4 miles very easy

Week 12: Down Week (25 miles)

Monday: Rest
Tuesday: Easy 5 miles
Wednesday: Easy 4 miles + 6x100m strides
Thursday: Easy 4 miles
Friday: Rest
Saturday: OPTIONAL: 5K or 10K tune-up race OR long run 8 miles easy
Sunday: Recovery 4 miles very easy

If you race: warm up 1-2 miles, race, cool down 1-2 miles. Total roughly the same. A tune-up race is a rehearsal for race-morning logistics (pinning a bib, the toilet queue, the start-line adrenaline), not a fitness test.

Phase 4: Peak and Taper (Weeks 13-15)

Week 13: Peak Week (33 miles)

Monday: Rest or cross-train
Tuesday: Easy 7 miles
Wednesday: Steady - 1mi easy warmup + 3mi at steady effort + 1mi easy cooldown = 5 miles
Thursday: Easy 6 miles
Friday: Rest
Saturday: PEAK LONG RUN - 12 miles (first 10 easy, last 2 at goal race pace). Full dress rehearsal: race shoes, race kit, race breakfast, race fueling.
Sunday: Recovery 3 miles very easy

This is the biggest day of the plan. If you can run 12 miles comfortably, the race is yours - the crowd, the taper, and the adrenaline are worth the last 1.1 miles.

Week 14: Taper Begins (26 miles)

Monday: Rest or cross-train
Tuesday: Easy 5 miles
Wednesday: Race-pace practice - 1mi easy + 3mi at goal race pace + 1mi easy = 5 miles
Thursday: Easy 4 miles
Friday: Rest
Saturday: Long run 9 miles easy
Sunday: Recovery 3 miles very easy

Week 15: Taper Continues (20 miles)

Monday: Rest
Tuesday: Easy 5 miles + 6x100m strides
Wednesday: Easy 4 miles
Thursday: Easy 4 miles
Friday: Rest
Saturday: Long run 7 miles easy (last long run - resist the urge to add miles)
Sunday: Rest

You will feel restless and possibly a bit sluggish this week. That is the taper working, not fitness disappearing. Fitness is not lost in 14 days. Fatigue is.

Phase 5: Race Week (Week 16)

Week 16: Race Week (12 miles + race)

Monday: Easy 3 miles
Tuesday: Easy 4 miles + 6x100m strides
Wednesday: Easy 3 miles
Thursday: Rest
Friday: Rest
Saturday: Easy 2 miles with 4x100m strides (shake out the travel legs), OR rest
Sunday: RACE DAY - HALF MARATHON (13.1 miles)

Weekly Mileage Progression

Week 1:  19 miles
Week 2:  20 miles
Week 3:  22 miles
Week 4:  17 miles (down week)
Week 5:  23 miles
Week 6:  25 miles
Week 7:  27 miles
Week 8:  20 miles (down week)
Week 9:  29 miles
Week 10: 31 miles
Week 11: 33 miles
Week 12: 25 miles (down week / tune-up race)
Week 13: 33 miles (PEAK)
Week 14: 26 miles (taper, -21%)
Week 15: 20 miles (taper, -23%)
Week 16: 12 miles + RACE

No week rises more than about 10% over the previous comparable week. Down weeks cut 20-25%. The taper cuts roughly 20-25% per week across the final three weeks. This is deliberate and it is the part of the plan most people wreck by "feeling good" and adding miles.

Long Run Progression

Week 1:  5 miles
Week 2:  6 miles
Week 3:  7 miles
Week 4:  5 miles (down week)
Week 5:  8 miles
Week 6:  9 miles   <- fueling practice starts here
Week 7:  10 miles
Week 8:  6 miles (down week)
Week 9:  10 miles
Week 10: 11 miles
Week 11: 11 miles (last 2 at race pace)
Week 12: 8 miles or tune-up race
Week 13: 12 miles (last 2 at race pace) <- PEAK
Week 14: 9 miles (taper)
Week 15: 7 miles (taper)
Week 16: RACE (13.1 miles)

Why you never run 13.1 in training: you do not need to. The final 1.1 miles are covered by the taper (you arrive fresh, not fatigued), the race-day adrenaline, and the crowd. Running 13 miles in training buys you nothing and costs you a week of recovery you cannot afford this close to the race.

Workout Descriptions

Easy Runs (the backbone - about 80% of this plan)

Pace: Conversational. Full sentences. If you are breathing hard, slow down.
HR: Zone 2 (60-70% max)
Purpose: Build the aerobic engine. This is where fitness comes from.
The beginner test: Recite a sentence out loud. If you cannot, you are running too fast.
It is normal for this to feel embarrassingly slow. It is supposed to.

Recovery Runs

Pace: Slower than easy. Genuinely shuffling is fine.
Purpose: Circulation and consistency, not fitness.
Note: The day after a long run. If you feel wrecked, walk it or take the day off.

Strides

Distance: 100 meters, smooth acceleration to a fast-but-relaxed pace, then walk back and fully recover.
Purpose: Form and leg turnover, not fitness. They are not sprints and they should never leave you out of breath.

Steady Runs (Weeks 9-13 only)

Pace: Controlled and firm - an effort you could sustain for about an hour. Roughly 10K-to-half-marathon effort.
HR: Zone 3 to low Zone 4 (75-85% max)
Feel: You can speak a few words at a time, not sentences.
Purpose: A modest nudge to your lactate threshold, and a chance to learn what "sustainably firm" feels like.
If in doubt, run it too slow. For a first half, a steady run done too easy costs you nothing. Done too hard, it costs you the next four days.

Long Runs

Pace: SLOW. 60-90 seconds per mile slower than your goal race pace.
Purpose: Time on feet. Aerobic adaptation. Fueling practice. Mental rehearsal.
This is the most important run of the week and the one beginners most often ruin by running too fast.
Walking breaks in a long run are perfectly acceptable. They are not failure.

Fueling and Hydration

Practice race-day fueling on EVERY long run over about 90 minutes. Nothing new on race day. Ever.

For most beginners, 90 minutes arrives somewhere around the 9-mile long run (Week 6). From then on, every long run is a fueling rehearsal.

Before: Eat the same pre-run breakfast you plan to eat on race morning, 2-3 hours before. Test it. If it disagrees with you, change it now, not in Week 16.
During: Take a gel, chew, or drink roughly every 30-45 minutes after the first 45 minutes. Take it with water, not with sports drink. Your gut is trainable, and this is the training.
After: Carbohydrate plus protein within about 60 minutes.
On race day: Use the exact products you practiced with. If the race hands out a brand you have never used, carry your own.

The single most common first-half-marathon disaster is a GI blow-up at mile 9 caused by a gel the runner had never tried before. Do not be that person.

Full detail: Fueling and Nutrition.

Signs You Should Back Off

Stop or reduce - do not "push through" - if you notice any of these:

Back off immediately (take 2-3 days easy or fully off):

Pain that changes how you run. Any limp, any altered gait. This is non-negotiable.
Sharp or localized pain, especially in a bone (shin, foot, hip). Diffuse muscle soreness is fine; a specific point that hurts to press is not.
Pain that gets worse as the run goes on, rather than warming up and fading.
Resting heart rate 7+ beats above your normal for several consecutive mornings.

Reassess the week (cut volume 25-30%):

Easy runs feel hard at paces that felt easy two weeks ago.
Sleep is disrupted, appetite is off, or you are irritable and flat.
You are dreading runs you used to look forward to.
You are getting sick repeatedly.
Your legs feel heavy every single day, not just after long runs.

The rule: taking three days off costs you nothing. Running through a stress reaction costs you the race and three months. Consistency over 16 weeks beats heroism in any one week. See injury prevention.

If You Miss Runs, a Week, or Get Injured

If you miss a single easy run: Skip it. Do not make it up. Do not add the miles elsewhere. It does not matter.

If you miss a long run: Move it to Sunday if you can. If the week is gone, do not run the missed long run and the next one back to back - repeat the previous long-run distance instead of jumping ahead.

If you miss one week (illness, travel, work):

Come back at roughly 70-80% of the volume you were at before the break.
Repeat the week you missed rather than jumping ahead to where the plan says you should be.
You have lost almost no fitness in seven days. You have lost seven days of the schedule. Those are different problems - solve the second one by moving the race or accepting a slightly smaller peak, not by cramming.

If you miss two to three weeks:

Rebuild for 1-2 weeks at 60-70% volume with no steady work.
Then rejoin the plan roughly 3-4 weeks earlier than where the calendar says you are.
If that means the peak long run lands too close to race day, cut the peak long run to 10-11 miles and take the extra taper. A slightly under-trained runner finishes a half marathon. An injured one does not start it.

If you miss four or more weeks, or you are injured:

Do not try to salvage the race by compressing the plan. This is how beginners get hurt badly.
See a physiotherapist or sports doctor for anything that has persisted more than 10 days.
Cross-train (bike, pool running, elliptical) to hold aerobic fitness while the injury heals - it holds far more than you would expect.
Defer to a later race. There is always another half marathon. There is only one of your tibia.

If you are injured mid-plan: the plan is now irrelevant. Rehab is the plan. Come back to Week 1 when you are pain-free walking, then pain-free running 20 minutes.

Race Week

The Last Seven Days

Do not run more than the plan says. The taper is not a suggestion. The work is done. You cannot gain fitness in seven days, and you can absolutely lose the race in seven days.
Do not try anything new. No new shoes, no new gels, no new socks, no new breakfast, no new massage, no new stretching routine.
Sleep is the priority, especially two nights before. The night before a race is often poor - that is fine and normal, and it is why the night before that one matters more.
Eat normally, with a modest carbohydrate emphasis for the last 2-3 days. You do not need a dramatic carb-load for a half marathon. Just eat enough and reduce fibre a little on the final day.
Hydrate steadily. Pale yellow urine. You cannot fix dehydration on race morning.

Race Morning

Wake 3 hours before the gun.
Eat your tested breakfast 2-3 hours before (300-500 calories, mostly carbohydrate, low fat and fibre).
Arrive early. The toilet queue is always longer than you think.
Warm up: 5-10 minutes of easy jogging plus a few strides. That is all. Beginners do not need a long warm-up - you have 13.1 miles to warm up in.
Line up further back than you think you should. Everyone lines up too far forward.

Race Strategy: How to Actually Run 13.1

The Beginner Pacing Plan (this is the whole strategy)

Miles 1-3: RUN SLOWER THAN GOAL PACE. 15-30 seconds per mile slower. You will feel amazing. Everyone around you will be running away from you. Let them. Almost all of them are making a mistake and you will pass them at mile 10.
Miles 4-9: Settle into goal pace. Find a rhythm. Relax the shoulders. Take your fuel on schedule, not when you feel like you need it - by the time you feel you need it, it is too late.
Miles 10-11: This is where the race starts. It will get uncomfortable. This is expected and does not mean anything is wrong. Shorten your focus: get to the next mile marker.
Miles 12-13.1: Whatever is left. If you have paced correctly, you will be passing people. It is a genuinely great feeling and it is the reward for the discipline of miles 1-3.

The single biggest mistake in a first half marathon is going out too fast in the first 3 miles. It is not close. Nothing else costs as much time. The adrenaline of the start line makes goal pace feel effortless, so you drift 30 seconds per mile faster, bank a couple of minutes, and pay it back with interest and misery from mile 10.

Walking Is Allowed

Walking through aid stations to drink properly costs about 10-15 seconds and is often a net gain, because drinking on the run at a jostling aid station usually means wearing most of the cup. Plan for it. Walking is not failure - it is a pacing tool.

If It Goes Wrong

You went out too fast and you are struggling at mile 9: Slow down deliberately and immediately, take fuel and water, and settle into a jog. Do not stop. You will finish.
Cramping: Slow down, walk briefly, take fluid and electrolyte. Do not stretch aggressively mid-race.
GI trouble: Stop taking gels, stick to water, slow down. You will still finish.
It is hotter than expected: Add 20-30 seconds per mile to goal pace from mile 1. Heat is a real physiological tax, not a mental one. Adjust or blow up.

For a fuller treatment: race-day execution.

After the Race

Keep walking for 10-15 minutes. Do not sit down immediately.
Eat and drink within 30-60 minutes.
Do not run for 3-5 days. Nothing. Walk if you want to move.
Easy running only for the following 7-10 days.
No hard workouts for at least 2 weeks.
Rough guide: one easy day per mile raced, so about two weeks before you think about training hard again.
Then, if you loved it: the 20-week beginner marathon plan is waiting.

Customization Guidelines

If You Can Only Run 4 Days a Week

Drop the Sunday recovery run entirely.
Do not redistribute those miles. Just run less. Four consistent days beats five days where the fifth one hurts you.
Your peak week becomes roughly 29-30 miles. That is completely sufficient to finish a half marathon strong.

If a Week Feels Too Hard

Repeat the previous week instead of progressing. There is no penalty for spending an extra week at a given volume.
Better to arrive at the start line a little under-trained and completely healthy than perfectly trained and injured.

If You Are Cruising and It Feels Too Easy

Resist. Do not add miles, do not add speedwork, do not run the long runs faster.
If you genuinely have surplus capacity, add cross-training or strength work, not running miles.
Feeling good in Week 8 is what the plan is supposed to produce. It is not evidence that the plan is too easy - it is evidence that it is working.
If you want more running, the intermediate half plan exists. Consider it next cycle, not mid-cycle.

If You Are Coming from a 10K

You are in exactly the right place. Start at Week 1 anyway.
Your speed is not the limiter for a half marathon. Your aerobic endurance is.

Adding Strength Work

2x per week, 20-30 minutes: squats, lunges, single-leg work, calf raises, planks, glute bridges.
Put it on Monday and Thursday, after the run, never before a long run.
It is one of the highest-return injury-prevention investments a beginner can make. See strength training.

Key Takeaways

Finish strong and healthy. That is the goal. Your first half marathon is a personal best by definition. Time goals belong to the second one.
Easy means easy. If you take one thing from this plan, take this. Most beginners run their easy days too hard and pay for it for 16 weeks.
Long runs are run slow - slower than goal pace. Their job is time on your feet, not rehearsal of race speed.
Volume before intensity, never both at once. Miles first, effort later.
The down week every 4th week is where you actually get fitter. Do not skip it.
Practice fueling on every long run over 90 minutes. Nothing new on race day.
Go out slow. Miles 1-3 slower than goal pace is the entire race strategy.
Consistency beats heroism. Sixteen weeks of honest, unglamorous, mostly-easy running is what gets you across the line. There are no shortcuts and you do not need any.

Next: 20-Week Marathon Training Plan (Beginner) - when finishing 13.1 leaves you wondering about 26.2.