42.195 kilometers. The distance that, according to legend, cost the Greek messenger Pheidippides his life when he brought news of the victory at Marathon to Athens. Whether the story is true or not, the marathon has lost none of its mythical aura to this day. It is the king of running disciplines, the ultimate test of body and mind.

Finishing a marathon is one of those experiences people describe as life-changing. It's not just a run – it's a journey that begins months before the starting gun and reveals what the human body and will are capable of. Crossing the finish line after 42 kilometers is a moment you'll never forget.

At the same time, the marathon should be approached with respect. It's not a goal for everyone – and that's perfectly fine. It's an extreme challenge that requires months of preparation, a significant time commitment, and a willingness to push yourself to your physical and mental limits. But if you're ready to embark on this journey, one of the most profound sporting experiences awaits you.

What can you expect from this guide?

This guide is for runners who already have half-marathon experience and want to take the next big step. You'll learn what marathon training entails, how to manage the enormous distances, how nutrition becomes a critical success factor, and how to prepare yourself mentally and physically for the toughest 42 kilometers of your life.

The leap from a half marathon to a marathon is qualitatively different from previous distance increases. You're not just doubling the distance – you're entering entirely new territory where things like glycogen management, mental strength, and running economy become crucial. Let's plan this journey together.

The marathon demands more than any other running distance. Before you start training, you should honestly assess whether you meet the requirements.

Physical basis

Ideally: You have been running regularly for at least 1-2 years. You have successfully completed at least one half marathon. You already train 4-5 times a week, covering 35-45 km weekly. No chronic injuries or unresolved issues. A medical check-up is advisable – especially for those over 35 or with risk factors. Jumping directly from 5 or 10 km to a marathon is possible, but risky. Gradual progression (5k → 10k → half marathon → marathon) is safer and more sustainable.

Time requirements

Marathon training requires time – a lot of time. 5-6 training sessions per week. Long runs of 2.5-3.5 hours. Add to that strength training, recovery, and sleep. Expect to dedicate 8-12 hours per week during peak training. If your life is currently characterized by stress, lack of sleep, or major commitments, now might not be the right time. A half-heartedly prepared marathon is frustrating and potentially dangerous.

Mental readiness

The marathon is at least as much a mental challenge as a physical one. Are you prepared to train consistently for months – even when it gets tough? Can you handle discomfort without giving up? Do you have the patience for a gradual build-up? Can you cope with setbacks (a bad week of training due to a cold, a poor long run)?

Why a marathon?

The best motivation is intrinsic – you want it for yourself, not to impress others. Good reasons: 'I want to know if I can do it,' 'The marathon is a life goal,' 'I love long runs and want to push myself to the limit.' Less good reasons: 'All my friends are doing it,' 'It looks good on social media,' 'I want to lose weight quickly.' The marathon will be a big part of your life for the next few months. Make sure you're there for the right reasons.

Marathon training isn't simply 'more of the same'. It has its own rules and principles that you should understand.

The three pillars

Pillar 1 – The Long Run: The core. Weekly long runs of up to 32-35 km. These train the body to use fat as fuel and prepare it for endurance training. Pillar 2 – Volume: The total number of kilometers per week. For most recreational runners: 50-80 km at their peak. More volume = better aerobic base. Pillar 3 – Quality: Tempo runs, intervals, marathon pace runs. These improve running economy and train race pace.

The 80/20 rule (more important than ever)

80% of your training should be at low intensity. This means your long runs are easy (60-90 seconds/km slower than marathon pace). Most of your other runs are easy. Only 1-2 sessions per week are intense. Many amateur marathon runners make the mistake of training too much in the 'gray zone' – too fast for true recovery, too slow for a real training stimulus. This leads to exhaustion without optimal adaptation.

Periodization

A typical marathon training program lasts 16-20 weeks and is divided into phases: Phase 1 (Base Building, 4-6 weeks): Build volume, low intensity. Phase 2 (Strengthening, 4-6 weeks): Further increase volume, first quality sessions. Phase 3 (Specific, 4-6 weeks): Highest volume, marathon-specific sessions, longest long runs. Phase 4 (Tapering, 2-3 weeks): Reduce volume, recover.

The long run – The heart of the matter

No other training session is as crucial for the marathon as the long run. Your body needs to learn to run for hours, burn fat efficiently, and mentally cope with the duration. Progression: Start with your current longest run (likely 16-20 km) and increase by 2-3 km every 1-2 weeks. Goal: At least one run of 32-35 km before the marathon. Don't increase the distance every week – have a reduction week every 3-4 weeks.

Here is a framework plan for ambitious amateur marathon runners. Starting point: You can already run 16-20 km continuously and train 35-40 km/week.

Phase 1: Building a base (Weeks 1-5)

Goal: Gently increase volume, get the body used to training. Structure per week: 5 runs. Long run: Start at 18 km, increase to 26 km. 3-4 easy to moderate runs (8-12 km). Strides after 2 easy runs. Total volume: 40-55 km/week. Week 4: Recovery week (volume -30%).

Phase 2: Build-up phase (weeks 6-10)

Goal: Further increase volume, introduce initial quality runs. Weekly structure: 5-6 runs. Long run: Increase to 28-30 km. 1 tempo run (30-40 min.) or intervals. 3 easy runs. 1 medium-length run (14-16 km). Total volume: 55-70 km/week. Week 8: Recovery week.

Phase 3: Specific Phase (Weeks 11-15)

Goal: Longest runs, marathon pace training, peak volume. Weekly structure: 5-6 runs. Long run: 30-35 km, including some marathon pace segments. 1 marathon pace run (12-16 km at target pace). 1 tempo run or intervals. 2-3 easy runs. Total volume: 65-80 km/week. Week 12: Longest run (32-35 km). Week 14: Recovery week.

Phase 4: Tapering (Weeks 16-18)

Goal: To get fresh without losing fitness. Week 16: Volume -30%. Long run 25 km. Last hard session. Week 17: Volume -50%. Long run 18-20 km. Only easy runs, a few strides. Week 18: Volume -60%. Short, easy runs. Tuesday: Light intervals or strides. Wednesday-Friday: Very short easy runs or rest. Saturday: Rest. Sunday: Your marathon!

Important instructions

This plan is a framework – adapt it to your life and your body. If you're exhausted, take an extra rest day. If you get sick, take a break. It's better to start undertrained and healthy than overtrained and injured.

In addition to long runs, marathon training requires targeted speed work. This makes you more efficient and prepares you for your race pace.

Marathon pace runs

The most important tempo run for marathon runners. You run longer distances at your planned marathon pace. Your body and mind learn what this pace feels like. Examples: 16 km at marathon pace. 20 km with the last 12 km at marathon pace. 14 km: 2 km warm-up, 10 km at marathon pace, 2 km cool-down. Frequency: Once a week during the specific training phase, alternating with other tempo runs.

Threshold runs (tempo runs)

Runs of 25-45 minutes at threshold pace – faster than marathon pace, roughly half-marathon pace. This trains lactate tolerance and improves aerobic capacity. The effect: You become faster and more efficient, which also has a positive impact on your slower marathon pace.

Interval training

Short, fast intervals with breaks. Faster than race pace. Examples for marathon preparation: 6 x 1000m at 10k pace with 3 min. recovery. 4 x 1600m with 3 min. recovery. 10-12 x 400m at a fast pace. Effect: Improves VO2max and running economy. Makes any pace more efficient. Frequency: Once a week, especially during the build-up phase.

Progressive long runs

A variation of the long run: Run the last 25-30% at marathon pace or faster. Example: 28 km total – 20 km easy, 8 km at marathon pace. Effect: Simulates the feeling of still maintaining pace at the end of a long run – exactly what you need in a marathon. Caution: These sessions are very demanding. Don't do them every week, and only if you feel well.

Periodization of tempo work

Not all at once. Early phase: Slow pace, focus on volume. Middle phase: Intervals and threshold runs to improve speed. Late phase: Marathon pace runs to get used to race pace. Tapering: Reduced intensity, maintenance only.

In a marathon, nutrition goes from being a secondary consideration to a critical success factor. Your body has limited glycogen stores – how you manage them determines victory or a complete collapse.

The science behind it

The human body can store about 400-500g of glycogen – in muscles and liver. That's enough for about 90-120 minutes of intense exertion. A marathon lasts 3-5 hours for most people. The mathematical problem is obvious: without replenishment, you run out of carbohydrates. Every marathon runner knows the result as 'hitting the wall' – typically around kilometer 30-35. Suddenly, your legs feel like lead, your pace drops, and every step becomes agony.

Strategy 1: Carb Loading

In the 2-3 days leading up to the marathon, you drastically increase your carbohydrate intake. The goal: to maximize your glycogen stores. Practical advice: more pasta, rice, bread, potatoes, and muesli. Less fiber (which can cause digestive problems). Less fat and protein (which take up space needed for carbohydrates). You might gain 1-2 kg – this is primarily water retention (glycogen binds water) and will disappear during the race.

Strategy 2: Nutrition during the run

The body can absorb approximately 60-90g of carbohydrates per hour during exercise. This significantly delays the depletion of glycogen stores. Options: Energy gels (approximately 20-25g of carbohydrates per gel). Take one every 30-45 minutes, starting at minute 30-45. Sports drinks are available at aid stations. Some runners use gummy bears, dates, or other snacks. Important: Test during training! Not everyone's stomach tolerates gels under stress. Some experience nausea or diarrhea. Find out what works for you well before the race.

Competition day – The practice

2-3 hours before the start: High-carbohydrate breakfast (toast, porridge, banana). During the run: First gel at kilometer 8-10. Then every 6-8 km or 30-45 minutes. Wash it down with water. Some aid stations only offer water, others also offer gels. Don't take too much at once – smaller amounts more frequently are better.

The marathon is at least half a mental race. Your body is trained – but will your mind cooperate when things get tough?

The dark kilometers

Most marathon runners hit a low point sometime between kilometers 28 and 38. Their legs ache, their energy levels plummet, and their inner critic starts shouting: 'Why am I doing this to myself?', 'I can't go on,' 'I should quit.' This is normal. It's part of the marathon experience. The question isn't whether this moment will come, but how you deal with it.

Mental strategies

Pacing: Don't think about 42 km. Divide the race into segments: 10 km, then another 10 km, then halfway, then 10 km, then almost there. Focus on the present: Not 'I still have 15 km to run,' but 'I'm running this kilometer.' Dissociation: Distract yourself – listen to music, observe your surroundings, look at the spectators. Helps when things get tough. Association: Focus on your body – breathing, steps, posture. Helps you stay efficient. Mantras: A short phrase you repeat. 'One step at a time,' 'I am strong,' 'Onward, onward, onward.' Visualization: Visualize crossing the finish line during training. When things get tough, recall this image.

The experience of long runs

Your long training runs prepare you mentally. You learn to deal with discomfort. You experience that bad phases pass. You develop confidence in your ability to persevere. Use long runs consciously for mental training – not just physical training.

What happens at 'the wall'?

When glycogen stores are depleted, the body switches to burning fat – a less efficient process. This feels brutal. Strategies: Reduce pace (consume fewer carbohydrates per minute). Walk (avoid failure – a strategy). Take a gel and wait for it to take effect (10-15 minutes). Stay mentally strong – it will get better. The wall isn't the end. Many runners push through and finish anyway. The feeling afterward is indescribable.

Marathon training puts enormous strain on the body. Without proper prevention and recovery, the risk of injury is high.

The most common marathon injuries

IT band syndrome: Pain on the outside of the knee. Caused by overuse and weak hip muscles. Plantar fasciitis: Pain in the sole of the foot. Achilles tendon problems: Pain above the heel. Stress fractures: Small cracks in the bone due to cumulative overuse. Serious – stop immediately and see a doctor. Runner's knee: Pain around the kneecap. Most injuries result from: Increasing training volume too quickly. Insufficient recovery. Neglected strength training. Ignored warning signs.

Prevention strategies

Gradual increase: Strictly adhere to the 10% rule. Marathon training requires patience. Regular recovery weeks: Reduce volume by 20-30% every 3-4 weeks. The body needs these breaks to adapt. Strength training: Twice a week – legs, hips, core. Strong muscles protect joints and tendons. Especially important: glutes and hip stabilizers. Good shoes: Change running shoes after 500-800 km. With high volume, you may want to rotate several pairs. Sleep: 7-9 hours. Often more is needed during marathon training. Sleep is the most important recovery measure.

Warning signs

Dull muscle soreness after a hard workout: Normal. Sharp, localized pain: Warning sign. Pain that worsens while running: Stop. Pain that doesn't improve after 2-3 days of rest: Consult a doctor. Swelling, redness, heat: Stop immediately and get it checked out. Better to rest for a week than lose a month due to a neglected injury.

Optimize regeneration

After long runs: Consume carbohydrates and protein immediately. Drink plenty of fluids. Do light exercise (walking) on ​​the same day. The following day: Rest or very light cross-training. In general: Foam rolling, stretching, occasional massage. Take care of your body – it will carry you through 42 km.

The weeks and months of preparation culminate in the big day. Here's how to make it perfect.

Last week (tapering)

Reduce volume drastically (50-60%). A few short, easy runs. On Tuesday/Wednesday: Final strides or short, fast intervals – this keeps your legs activated. From Thursday onwards: Only very light running or rest. Carb loading from Wednesday/Thursday. Get plenty of sleep – even if you can't sleep because you're too excited. Avoid stress, drink plenty of fluids, and eat familiar foods.

The evening before

Pack everything – race number, shoes, clothes, gels, petroleum jelly. Eat a carbohydrate-rich meal – not too late, not too much. No alcohol. Go to bed early – even if your sleep is restless.

The morning

Get up early – at least 3 hours before the start. Eat a tried-and-tested breakfast (one you've tested in training). Allow plenty of time for bathroom breaks. Arrive at the starting area in good time.

At the start

Warm-up: Minimal for a marathon – a few minutes of easy jogging, strides, dynamic stretches. You want to conserve energy, not burn it. Last bathroom break. Line up in the correct starting block. Have energy gels ready for the run.

The pacing strategy

Start conservatively: Run the first 10 km slightly slower than your target pace. The most common beginner mistake – starting too fast and then hitting a wall at kilometer 30. Maintain a steady pace: Kilometers 10-30 at your target pace. This is the 'work phase'. Finish: From kilometer 30 onwards, give it what you've got. If you've paced yourself well, you'll still have some energy left.

Catering

Plan: When will you take which gel? At which aid stations will you drink? Typical: First gel at kilometer 8-10. Then every 6-8 km. Drink at every 2nd-3rd aid station (not at every one). Wash it down with water, not a sports drink (too much sugar at once can cause problems).

You did it – you've covered 42.195 kilometers. Now what?

Immediately after crossing the finish line

Keep walking – don't sit or lie down immediately. Your muscles need gentle movement to maintain blood flow. Stay warm: Put on dry clothes or a survival blanket – your body cools down quickly. Eat and drink: Carbohydrates and protein, fluids. Most marathons offer refreshments in the finish area. Celebrate: You've just accomplished something extraordinary. Savor the moment.

The first few days

Days 1-3: Active recovery. Light walking, perhaps swimming. No running. Plenty of sleep. The body is repairing micro-tears. Expect sore muscles, especially in the thighs. Stairs will be a challenge – this is normal. Nutrition: No dieting now. The body needs energy to regenerate.

The first few weeks

Week 1: Only light activity. Short, slow jogs from day 5-7, when you feel ready. Week 2: Gradually increase running, but only at a relaxed pace. Weeks 3-4: Resume normal, easy runs. No speed work or long distances for at least 3-4 weeks. Rule of thumb: One day of light recovery for every mile of race distance. That would be about 26 days – almost a month.

The Post-Marathon Blues

Many marathon runners experience an emotional low after the race. You've trained for months towards a goal – now it's over. That's normal. Strategies: Celebrate your success – it deserves recognition. Reflect on the experience – write about it, share it. Set yourself a new goal – it doesn't have to be another marathon right away. Give yourself a mental break from training.

What happens next?

After adequate recovery, you have options: Another marathon – many become addicted. With experience, the next ones will be better. Improve your time – you can optimize with the knowledge from your first marathon. Other distances – perhaps back to a half marathon or 10k, with a fresh perspective. Other challenges – trail running, ultramarathons, triathlons. Simply running – without a goal, for the sheer joy of it.

The long-term perspective

A marathon is not an end point, but a milestone. You have proven that you are capable of extraordinary things. This experience will carry you through life – in sports and beyond.