How to Train for a Half Marathon in 12 Weeks

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Twelve-week half-marathon training plan

Running a half marathon is a challenging but rewarding endeavor. It requires dedication, discipline, and a well-structured training plan. If you've decided to take on the 13.1-mile journey, congratulations! This article will guide you through a 12-week training program to help you prepare for your half marathon successfully. Whether you're a beginner or an experienced runner looking to improve your performance, this plan will help you build the endurance and confidence needed to complete the race.

Weeks 1-4: Building a Solid Foundation

The first month of your training is all about establishing a solid foundation of endurance and getting your body accustomed to regular running. Here's what your training weeks should look like:

Week 1-2: Getting Started

  • Monday: Start with a 30-minute easy-paced run. This run should be comfortable, and you should be able to hold a conversation.
  • Wednesday: Another 30-minute easy-paced run.
  • Friday: Cross-training day. Activities like swimming, cycling, or yoga are great choices.
  • Saturday: Increase your long run to 4 miles at a comfortable pace.
  • Sunday: Rest or engage in light stretching and foam rolling.

Week 3-4: Increasing Mileage

  • Monday: Increase your weekday runs to 40 minutes each.
  • Wednesday: Maintain a 40-minute run.
  • Friday: Cross-train.
  • Saturday: Extend your long run to 6 miles at an easy pace.
  • Sunday: Rest and recover.

During these initial weeks, focus on maintaining a conversational pace during your runs. Listen to your body, stay hydrated, and prioritize rest to avoid injury.

Weeks 5-8: Building Endurance

Now that you have a solid base, it's time to start increasing your mileage and building endurance. Here's your training schedule for weeks 5-8:

Week 5-6: Increasing Mileage

  • Monday: Run for 45 minutes at an easy pace.
  • Wednesday: Continue with a 45-minute run.
  • Friday: Cross-train.
  • Saturday: Extend your long run to 8 miles at an easy pace.
  • Sunday: Rest or engage in light stretching and yoga.

Week 7-8: Adding Variety

  • Monday: Increase your weekday runs to 50 minutes each.
  • Wednesday: Maintain a 50-minute run.
  • Friday: Cross-train.
  • Saturday: Incorporate hill training or interval runs for 6 miles.
  • Sunday: Rest and recover.

During these weeks, focus on maintaining a steady pace during your long runs and incorporate some variety in your training to improve your overall fitness.

Weeks 9-12: Tapering and Fine-Tuning

The final weeks leading up to your half marathon are crucial for tapering, fine-tuning your training, and ensuring you're prepared for race day. Here's your training schedule for weeks 9-12:

Week 9: Tapering Begins

  • Monday: Run for 45 minutes at an easy pace.
  • Wednesday: Continue with a 45-minute run.
  • Friday: Cross-train.
  • Saturday: Reduce your long run to 10 miles at a comfortable pace.
  • Sunday: Rest and recover.

Week 10: Tapering Continues

  • Monday: Run for 30 minutes at an easy pace.
  • Wednesday: Run for 30 minutes at an easy pace.
  • Friday: Cross-train.
  • Saturday: Run for 6 miles at an easy pace.
  • Sunday: Rest and recover.

Week 11: Final Preparations

  • Monday: Run for 20 minutes at an easy pace.
  • Wednesday: Run for 20 minutes at an easy pace.
  • Friday: Cross-train.
  • Saturday: Rest or engage in light stretching and yoga.
  • Sunday: Race day!

Week 12: Post-Race Recovery

Congratulations, you've completed your half marathon! This week is all about recovery and reflection. Engage in gentle activities like walking and stretching to aid in your recovery. Reflect on your race, celebrate your achievement, and consider your next running goals.

Tips for a Successful Training Program

  1. Listen to Your Body: Pay attention to any signs of fatigue, discomfort, or injury. Rest when needed and don't push yourself too hard.

  2. Stay Hydrated and Nourished: Proper hydration and nutrition are essential for performance and recovery. Eat a balanced diet and fuel your body with the right nutrients.

  3. Incorporate Strength Training: Strength training can help prevent injuries and improve your running performance. Include exercises for your core, legs, and upper body in your routine.

  4. Rest and Recovery: Rest days are just as important as training days. Allow your muscles and joints to recover and repair.

  5. Mental Preparation: Half marathons can be mentally challenging. Practice positive self-talk and visualize your success during tough training sessions.

  6. Gear and Apparel: Invest in quality running shoes and comfortable apparel. Make sure you've tested your race-day outfit during your training.

  7. Race-Day Plan: Plan your race day logistics in advance, including transportation, hydration, and pacing strategy.


Training for a half marathon in 12 weeks requires commitment and a well-structured plan. By gradually increasing your mileage, incorporating cross-training and rest days, and paying attention to your body's signals, you can prepare yourself for a successful half marathon experience. Remember that every runner is different, so adapt this training plan to your individual needs and goals. With dedication and perseverance, you'll be well-prepared to conquer the 13.1-mile challenge on race day.