Editorial Team · on 17 June 2026 · 7 min read · Last reviewed 17 June 2026
A training plan for running a half marathon is a structured schedule designed to prepare runners for the 21.1 km distance, balancing mileage, speed work, and recovery.
Think of it like building a house. You wouldn’t start with the roof, you’d lay the foundation, frame the structure, then add details. A half marathon plan starts with base mileage, builds endurance, then adds speed and race-specific workouts.
Key facts
- A standard half marathon plan lasts 8 to 16 weeks, depending on your starting fitness level.
- Most plans include 3 to 4 runs per week, with one long run that gradually increases in distance.
- Cross-training (e.g., cycling or swimming) is often incorporated to reduce injury risk.
- Tapering, reducing mileage before the race, is crucial for peak performance on race day.
What does a training plan for running a half marathon look like?
A typical plan blends easy runs, speed work, and a weekly long run. Easy runs build endurance; speed work improves race-day pace; and the long run trains your body to handle the half marathon distance. For example, a beginner plan might start with a 5 km long run, adding 1 km per week until you hit 16-18 km. Intermediate runners might begin with a 10 km long run and peak at 20-22 km.
Speed work could include intervals (e.g., 400m repeats at goal pace) or tempo runs (sustained effort at a comfortably hard pace). The first time I really looked at a half marathon plan, I was struck by how much it resembled a puzzle, each workout fits into a bigger picture to prepare your body for race day.
Most plans also include rest days or cross-training to prevent burnout and injuries. Cross-training activities like cycling or swimming keep you active without pounding your joints.
How to choose the right training plan for running a half marathon
Beginner runners should start with a 12- to 16-week plan, while intermediate runners can opt for an 8- to 12-week plan. Advanced runners might follow a shorter, more intense plan. Online platforms like Half Marathon Running Training Plan offer customizable plans based on your experience and goals.
Look for a plan that includes a mix of easy runs, speed work, and long runs. For example, the Hal Higdon Novice Half Marathon Training Program is a popular choice for beginners, with a 12-week structure and gradual mileage increases. If you’re targeting a specific race, some plans tailor workouts to the course’s terrain (e.g., hilly or flat).
Consider your schedule, some plans require 4-5 runs per week, while others fit into a busier lifestyle with 3 runs. Adjustments can be made, but consistency is key. For instance, if you miss a long run, try to make it up later in the week or the following week.
Sample Half Marathon Training Plans
Here are two examples of half marathon training plans, one for beginners and one for intermediates.
How to stick to your training plan for running a half marathon
Consistency is the hardest part of any training plan. To stay on track, set small, achievable goals, like completing a 10 km long run without walking. Use a running app like Strava or Garmin Connect to track progress and share milestones with friends for accountability.
Listen to your body. If you’re exhausted or injured, take an extra rest day. Pushing through pain can lead to longer setbacks. For example, if your knees ache after a long run, swap the next session for swimming or yoga.
Find a running buddy or join a local running group. The social aspect makes workouts more enjoyable, and the group’s pace can push you to improve. If you prefer solo runs, try audiobooks or podcasts to keep your mind engaged.
Nutrition and hydration for half marathon training
Fueling properly is as important as the runs themselves. Aim for a balanced diet with enough carbohydrates, proteins, and healthy fats. Carbs are your body’s primary energy source for long runs, so include whole grains, fruits, and vegetables in your meals.
During runs longer than 60 minutes, practice fueling with energy gels, chews, or sports drinks. For example, Running 5k Training Plan recommends consuming 30-60 grams of carbs per hour during long runs. Hydration is equally critical, drink water regularly and consider electrolyte drinks for runs over 90 minutes.
Post-run recovery matters, too. Eat a snack with protein and carbs within 30-60 minutes of finishing, like a banana with peanut butter or a protein smoothie. This helps repair muscles and replenish glycogen stores.
Race week and taper
In the final week before the race, reduce your mileage by 20-30% to let your body recover. This is called tapering, and it’s essential for feeling fresh on race day. For example, if your longest run was 20 km, aim for 14-16 km the week before the race.
Focus on light workouts like short, easy runs or a brief shakeout run the day before the race. Save your energy, don’t try to cram in extra miles or intense speed work. Trust that your training has prepared you.
Prepare your gear, outfit, and race-day fuel in advance. Lay everything out the night before to avoid last-minute stress. Double-check the race packet for details like start time, parking, and bag check.
Race day strategy
Start conservatively, many runners go out too fast and bonk later. Aim to run the first few kilometers at a pace that feels comfortable, even if it’s slower than your goal pace. For example, if your goal is 5:30 per km, start at 5:45-6:00 per km.
Break the race into segments. Focus on the first 5 km, then the next 10 km, and so on. This makes the distance feel more manageable. Hydrate at aid stations, even if you don’t feel thirsty. Sip water or electrolyte drinks every 3-5 km.
If you hit a wall, slow down or walk for a short stretch. Mentally refocus by counting your steps or singing a song in your head. Most runners experience low points during a race, it’s normal, and pushing through is part of the challenge.
Post-race recovery
After crossing the finish line, cool down with a slow walk or gentle stretching. Replenish with fluids and a snack, like a banana or recovery drink. Celebrate your achievement, whether it’s your first half marathon or a personal best!
Take a few days off running to let your body recover. When you return, start with short, easy runs. Gradually rebuild your mileage if you plan to race again. For example, if your half marathon was in spring, consider a 5k or 10k in the summer to stay sharp without overexertion.
Reflect on your race experience. What worked well? What would you change? Use these insights to improve your next training plan. Whether you’re aiming for a faster time or a longer distance, each race is a step toward your running goals.
Training Plan for Running a Half Marathon: A Quick Checklist
- Choose a plan that fits your experience level and schedule.
- Include a mix of easy runs, speed work, and long runs.
- Prioritize rest and cross-training to prevent injuries.
- Fuel properly with balanced meals and hydration.
- Taper your mileage in the final week before the race.
- Start the race conservatively and break it into segments.
- Celebrate your achievement and reflect on your performance.
Every runner’s journey is unique, but a well-structured training plan for running a half marathon sets you up for success. Whether you’re a beginner or a seasoned runner, embrace the process, each step brings you closer to the finish line.
Frequently asked questions
How many weeks should I train before a half marathon?
A solid training plan spans 12 to 16 weeks. Beginners should aim for 12 weeks, covering 25 to 30 miles weekly, with one long run every week, increasing by a mile until peaking at 12 miles. Intermediate runners might extend to 16 weeks, hitting 40 to 50 miles weekly, with long runs up to 15 miles.
What’s the ideal weekly mileage for half marathon training?
Aim for 25 to 35 miles weekly if you're new to running. Experienced runners often target 40 to 50 miles, balancing long runs with speed work. The key is gradual progression; never increase weekly mileage by more than 10% to avoid injury.
Should I include speed work in my training plan?
Yes, but keep it balanced. Include one speed session per week, such as tempo runs or intervals. For example, run 3 miles at a pace 30 seconds per mile faster than your goal half marathon pace. This improves endurance and race-day performance.
How do I structure my long runs?
Start with 6 miles and add a mile each week until you hit 12 miles. For example, Week 1: 6 miles; Week 2: 7 miles; and so on. Include a mix of easy and moderate paces, with the last 2 to 3 miles at your goal half marathon pace to simulate race conditions.