01 · Why the half marathon?Why choose the half marathon?
For many runners, the half marathon is the ideal goal: long enough to feel like a real performance, but still manageable alongside work, family or other sports. It is the distance where endurance, discipline and smart training come together.
With a good preparation, you not only learn to run farther, but also to listen to your body, pace more intelligently and recover better.
Whether you are aiming for a fast time or simply want to cross the finish line strong and proud, twelve weeks of structure, patience and balance can get you ready for 21.1 km.
02 · Who is this plan for?Who is this plan for?
If you cannot yet run 10 km in about 60 minutes without being completely spent, start with the 10K plan first.
03 · 12-week half planThe 12-week half marathon plan (beginner)
For every session we recommend a proper warm-up. Start with 5 minutes of easy walking or dynamic mobility drills to wake up your muscles and tendons. Read our article on warming up and cooling down to understand why it matters.
The schedule below is for runners who have just reached 10K and want to complete a half marathon continuously and without injury, without making speed the main focus.
| Week | Session 1 (Monday) | Session 2 (Wednesday) | Session 3 (Saturday) |
|---|---|---|---|
| 1 | Easy run 30 min | Interval 6 × 2 min strong, 90s recovery | Long run 50 min |
| 2 | Easy run 35 min | Interval 7 × 2 min strong | Long run 55 min |
| 3 | Easy run 35 min + 4 Strides | Interval 6 × 3 min brisk, 90s recovery | Long run 60 min |
| 4 | Easy run 40 min | Tempo run 20 min | Long run 65 min |
| 5 | Easy run 35-40 min | Interval 6 × 4 min at 10K pace, 90s recovery | Long run 70 min |
| 6 | Easy run 40 min | Tempo run 25 min | Long run 75 min |
| 7 | Easy run 40 min + 4 strides | Interval 5 × 1 km strong, 2 min recovery | Long run 80 min |
| 8 | Easy run 35 min | Tempo run 30 min | Long run 85-90 min |
| 9 | Easy run 40 min | Interval 4 × 1200 m at 10K pace, 2 min recovery | Long run 90-95 min |
| 10 | Easy run 35-40 min | Tempo run 25 min smooth | Long run 100 min (last 15 min slightly faster) |
| 11 | Easy run 30 min | Interval 4 × 800 m at race pace | Long run 75 min (Taper) |
| 12 | Easy run 25 min | Easy run 25 min | Half marathon race / test run (21.1 km) |
04 · 12-week alternativeAlternative 12-week plan (beginner+)
If you already have a bit more base fitness, such as 20-30 km per week or a comfortable 10K, you can handle more duration, intensity and overall load, especially in the middle weeks.
The alternative schedule below is for the average runner with more experience. The easy runs stay relatively light, while the long runs move toward 110-120 minutes and the tempo/interval sessions become more demanding and more specific.
| Week | Session 1 (Monday) | Session 2 (Wednesday) | Session 3 (Saturday) |
|---|---|---|---|
| 1 | Easy run 40 min | Interval 6 × 3 min strong, 90s recovery | Long run 60 min |
| 2 | Easy run 45 min | Interval 7 × 3 min strong | Long run 70 min |
| 3 | Easy run 45 min + 4 Strides | Interval 6 × 4 min brisk, 90s recovery | Long run 75 min |
| 4 | Easy run 45 min | Tempo run 25 min | Long run 80 min |
| 5 | Easy run 40-45 min | Interval 6 × 5 min at 10K pace, 90s recovery | Long run 85 min |
| 6 | Easy run 50 min | Tempo run 30 min | Long run 90 min |
| 7 | Easy run 45 min + strides | Interval 5 × 1 km strong, 2 min recovery | Long run 95 min |
| 8 | Easy run 45 min | Tempo run 35 min | Long run 100 min |
| 9 | Easy run 45 min | Interval 4 × 1200 m at 10K pace, 2 min recovery | Long run 105-110 min |
| 10 | Easy run 40 min | Tempo run 30 min | Long run 110-115 min (last 15 min slightly faster) |
| 11 | Easy run 35 min | Interval 4 × 800 m at race pace | Long run 75-80 min (Taper) |
| 12 | Easy run 40 min | Easy run 30 min | Half marathon race / test run (21.1 km) |
Personal plan
Build a running plan that fits your week
Choose your goal, training frequency and available weeks. RUNCULTURE turns it into a clear plan you can actually follow.
05 · Training principlesTraining principles
Every runner who wants to improve benefits from a few simple but powerful training principles. They help you become faster and stronger, but also keep you injury-aware and consistent.
Use How to combine running with strength training to place those strength days intelligently.
06 · Nutrition and hydrationNutrition and hydration
Use What should you eat before a running race? as your guide so your nutrition is already tested before race day.
07 · Race week (taper)Race week (taper)
In the final week, everything is about freshness and confidence. This is your taper phase. You train less, but still keep the body awake enough to feel sharp on race day.
Good luck. We would love to hear how your race went.
08 · MistakesCommon mistakes
Even well-prepared runners fall into the same traps. A half marathon is not just about fitness; it is also about planning, recovery and discipline.
Plan recovery just as intentionally with Sleep and recovery: how they affect performance.
09 · FAQFrequently asked questions
Summary & next step
This 12-week build combines base fitness, race-specific work and a taper for a strong half marathon. Practise your fueling, keep your easy days genuinely easy, and arrive fresh at the start.