Half Marathon Training Plan: 12-Week Schedule for Beginners and Improvers

Half Marathon Training Plan: 12-Week Schedule for Beginners and Improvers

Whether you’re stepping up from a 5K or chasing a new personal best, a structured half marathon training plan is the difference between surviving 13.1 miles and truly racing them. This 12-week schedule is designed for two types of runners: beginners who can currently run 3–5 miles comfortably and want to finish their first half marathon feeling strong, and improvers who have already crossed a half marathon finish line and are ready to run faster. The plan balances mileage buildup, key workouts, and essential recovery — the three pillars of successful half marathon preparation.

Before You Begin: What You Need to Know

Before diving into week one, a few foundational points will make the entire plan more effective:

• Base fitness: You should be running at least 3 days per week and able to run 3 miles without stopping. If you’re not there yet, spend 4–6 weeks building to that point before starting week one.
• Easy pace matters: The vast majority of your miles should be run at a conversational easy pace — meaning you can speak in full sentences without gasping. Running too hard on easy days is the most common training mistake and leads to burnout and injury.
• Cross-training: On optional cross-training (XT) days, consider cycling, swimming, yoga, or strength training. These activities build fitness and reduce the repetitive-stress injury risk that comes from running daily.
• Listen to your body: If you feel sharp pain (not normal muscle soreness), take an extra rest day. Completing 11 of 12 weeks healthy is better than grinding through an injury in week 8.
• Gear up: Get fitted at a specialty running store for proper shoes before you start. The wrong shoes are a leading cause of preventable injuries.

Understanding the Workout Types

Each week includes several different types of runs, each serving a specific purpose in your development:

• Easy Run (E): Conversational pace. These miles build your aerobic engine and aid recovery between harder efforts.
• Long Run (LR): Your most important weekly workout. Builds endurance and mental toughness. Always run at an easy, sustainable pace.
• Tempo Run (T): A “comfortably hard” effort — you can speak a few words but not hold a conversation. Typically 20–40 minutes at this effort. Builds your lactate threshold and race-pace fitness.
• Strides (S): Short, 20-second accelerations to near-sprint pace, done at the end of an easy run. Improve running economy and leg turnover without taxing the body.
• Rest Day: Full rest. Do not run. Sleep, stretch, foam roll, and eat well.
• Cross-Training (XT): Optional low-impact activity. 30–45 minutes is sufficient.

The 12-Week Half Marathon Training Plan

Week 1 — Building the Habit (Total: ~15–18 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 3 miles + 4 strides
• Wednesday: Easy Run — 3 miles
• Thursday: Easy Run — 3 miles
• Friday: Rest
• Saturday: Long Run — 5 miles (easy pace)
• Sunday: Rest or XT (30 min walk/bike/yoga)

Week 2 — Finding Your Rhythm (Total: ~17–20 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 3 miles + 4 strides
• Wednesday: Easy Run — 4 miles
• Thursday: Easy Run — 3 miles
• Friday: Rest
• Saturday: Long Run — 6 miles (easy pace)
• Sunday: Rest or XT

Week 3 — Adding Quality (Total: ~19–22 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 4 miles + 4 strides
• Wednesday: Tempo Run — 1 mile easy warm-up, 20 min tempo, 1 mile easy cool-down (~4 miles total)
• Thursday: Easy Run — 3 miles
• Friday: Rest
• Saturday: Long Run — 7 miles (easy pace)
• Sunday: Rest or XT

Week 4 — Recovery Week (Total: ~15–17 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 3 miles
• Wednesday: Easy Run — 3 miles + 4 strides
• Thursday: Easy Run — 3 miles
• Friday: Rest
• Saturday: Long Run — 5 miles (easy pace)
• Sunday: Rest
• Note: Recovery weeks are not optional. Your body needs them to absorb the training load from the previous three weeks. Skipping this week is a false economy.

Week 5 — Building Strength (Total: ~21–24 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 4 miles + 4 strides
• Wednesday: Tempo Run — 1 mile easy, 25 min tempo, 1 mile easy (~5 miles total)
• Thursday: Easy Run — 4 miles
• Friday: Rest
• Saturday: Long Run — 8 miles (easy pace)
• Sunday: Rest or XT

Week 6 — Pushing the Long Run (Total: ~23–26 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 5 miles + 4 strides
• Wednesday: Tempo Run — 1 mile easy, 30 min tempo, 1 mile easy (~5–6 miles total)
• Thursday: Easy Run — 4 miles
• Friday: Rest
• Saturday: Long Run — 9 miles (easy pace)
• Sunday: Rest or XT

Week 7 — Peak Quality (Total: ~25–28 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 5 miles + 6 strides
• Wednesday: Tempo Run — 1 mile easy, 35 min tempo, 1 mile easy (~6 miles total)
• Thursday: Easy Run — 5 miles
• Friday: Rest
• Saturday: Long Run — 10 miles (miles 8–10 at goal half marathon pace)
• Sunday: Rest or XT

Week 8 — Recovery Week (Total: ~17–19 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 3 miles
• Wednesday: Easy Run — 4 miles + 4 strides
• Thursday: Easy Run — 3 miles
• Friday: Rest
• Saturday: Long Run — 6 miles (easy pace)
• Sunday: Rest

Week 9 — Race Simulation (Total: ~25–28 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 5 miles + 6 strides
• Wednesday: Tempo Run — 1 mile easy, 40 min tempo, 1 mile easy (~7 miles total)
• Thursday: Easy Run — 5 miles
• Friday: Rest
• Saturday: Long Run — 11 miles (miles 8–11 at goal half marathon pace)
• Sunday: Rest or XT

Week 10 — Peak Week (Total: ~27–30 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 5 miles + 6 strides
• Wednesday: Tempo Run — 1 mile easy, 30 min tempo, 1 mile easy (~5–6 miles total)
• Thursday: Easy Run — 5 miles
• Friday: Rest
• Saturday: Long Run — 12 miles (easy pace — your longest training run)
• Sunday: Rest or XT
• Note: Don’t try to run 13.1 miles before your race — 12 miles is sufficient and leaves energy in the tank for race day.

Week 11 — Taper Begins (Total: ~19–22 miles)

• Monday: Rest or XT
• Tuesday: Easy Run — 4 miles + 4 strides
• Wednesday: Tempo Run — 1 mile easy, 20 min tempo, 1 mile easy (~4 miles total)
• Thursday: Easy Run — 3 miles
• Friday: Rest
• Saturday: Long Run — 8 miles (easy pace)
• Sunday: Rest

Week 12 — Race Week (Total: ~8–10 miles pre-race)

• Monday: Rest or very easy 20-minute walk
• Tuesday: Easy Run — 3 miles + 4 strides
• Wednesday: Easy Run — 2–3 miles
• Thursday: Rest
• Friday: Easy Run — 2 miles + 4 strides (shakeout run)
• Saturday: Rest — lay out your gear, eat your pre-race meal, sleep early
• Sunday: RACE DAY — Half Marathon!

Pacing Your Half Marathon

Pacing is where races are won or lost. A half marathon that starts too fast almost always finishes in pain and disappointment. Here are the key pacing guidelines:

• First 3 miles: Run 15–20 seconds per mile slower than your goal pace. It should feel almost embarrassingly easy. This discipline pays dividends at miles 10–13.
• Miles 4–10: Settle into your goal half marathon pace. Check your watch every mile and adjust. Focus on your breathing and form.
• Miles 11–13.1: If you’ve paced conservatively, this is when you give what’s left. Pick up the pace, pass people, and trust your training.

A useful rule of thumb: your half marathon pace should be roughly 15–20 seconds per mile faster than your marathon pace, and about 30–45 seconds per mile slower than your 10K pace.

Fueling and Hydration During Training and on Race Day

For runs under 60 minutes, you typically don’t need to take in fuel during the run itself — water or a sports drink every 15–20 minutes is sufficient. For your long runs of 8 miles and beyond, practice your race-day fueling strategy:

• Take a gel, chew, or sports drink every 45–60 minutes of running.
• Practice with the brand of gel or drink that will be available on your race course so your stomach knows what to expect.
• Drink 4–6 ounces of water at each aid station, especially in warm weather.
• Never try new nutrition products on race day — always test in training first.

Finding Your Goal Race

With 12 weeks of training behind you, finding the right race is the final puzzle piece. The Brooklyn Half is one of the biggest and most energetic half marathons in the country, running through the heart of Brooklyn to Coney Island — an incredible debut race experience. The NYC Half takes runners through Central Park and the streets of Manhattan, finishing in midtown — a bucket-list event that’s as scenic as it is well-organized. Browse the full What Race To Run directory for hundreds of half marathons across the country and find the one that’s right for your goals, location, and timeline.

The Mental Game: Trust the Plan

There will be weeks in this plan — usually around weeks 7 and 8 — when the training feels hard and you wonder if you’ll be ready. This is normal. The taper in weeks 11 and 12 exists precisely because your body needs to consolidate all the fitness you’ve built. You will feel fresher on race day than you do in the middle of peak training, and that freshness will translate into a strong performance.

Trust the long run. Trust the tempo work. Trust the easy days. And when you cross the half marathon finish line — whether it’s your first or your fastest — remember that 12 weeks of consistent, smart work got you there. That’s something to be genuinely proud of.