How to Train for a Marathon: A Beginner’s Guide

By Oscar Collins
Illustration of man jogging

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Marathons are a legendary feat of human endurance. They’ll test your physical and mental limits, whether you’re a seasoned runner or just getting off the couch. The great news is that anyone with dedication, discipline and the right plan can complete this epic challenge. How to train for a marathon takes more than running a few laps every day. The best running regimen includes not only a comprehensive training schedule but also factors in nutrition, gear, recovery and injury prevention. 

Your Marathon Training Guide

The journey of 26.2 miles begins with a single step — and a solid plan.

Prioritize consistency over intensity. Think of this guide as a roadmap instead of a rigid set of rules. The key is to develop a routine that works for you and maintain it. Here are the core components of an effective marathon running plan. 

Easy Runs

Also known as recovery runs, these are low-intensity runs that make up the bulk of the training. They build a solid aerobic base and help the body recover from harder efforts without adding stress — a crucial ability for the later stages of a marathon. Generally, you should be able to speak in complete sentences without gasping for breath. 

Long Runs

The cornerstone of marathon training. As a beginner, your long runs must be progressive, starting around 3-6 miles and gradually increasing by 1-2 miles per week. The goal is to get your body used to moving for 3-4 hours continuously and hit a specific mileage. 

Long runs build endurance, teach the body to burn fat for fuel and provide the crucial opportunity to practice hydration and nutrition strategies. Practice everything for the race during these runs, from the clothes you’ll wear to your pre-run breakfast, to avoid surprises on the big day. 

Tempo Runs

These are “comfortably hard” efforts, where you run at a challenging but sustainable pace for a set duration. Tempo runs increase your lactate threshold, which helps you run faster for longer. An example is a 10-minute warmup jog, followed by 20 minutes at a comfortably hard pace and finished with a 10-minute cooldown jog. 

Intervals

These are short bursts of high-intensity running followed by recovery periods. Intervals can improve your running efficiency and boost your top-end speed. For example, after a warmup, run 400 meters or one lap at a fast pace, then jog slowly for 400 meters to recover. Repeat this 4-6 times. 

Running faster forces you to be more efficient. It can improve your stride, foot turnover and overall running economy, so your easy pace starts to feel even easier. 

Tapering

The final 2-3 weeks of the plan must involve a “taper,” where you significantly reduce mileage to allow your muscles to repair and your body to replenish its energy stores. That way, you’ll be 100% rested for the big day. 

During this state, you can slightly increase your carbohydrate intake to super-saturate your muscles with fuel for race day. It’s also normal to feel anxious, sluggish or even imagine new injuries during the taper because you’re so used to running. 

How to Fuel Your 26.2-Mile Journey

Eating food that's rich in macronutrients can boost your marathon training.

You can’t outrun a bad diet, so include nutrition in your marathon running plan.

Pack Macronutrients Into Your Diet

Carbohydrates are your body’s most accessible energy source. Eat meals with complex carbs, like oatmeal, brown rice and sweet potatoes, for sustained energy. Simple carbs, like energy gels and candy, are perfect while you’re running, as they provide fast-acting energy that’s easy to digest. 

Also, add lots of protein, such as lean chicken, fish, beans and tofu, to your meals. This macronutrient repairs muscle tissue that breaks down during training, so it’s crucial for recovery. 

Eat healthy fats as well, which promote hormone production and are a key energy source during lower-intensity, longer runs. Some great sources include salmon, avocado, nuts, olive oil, full-fat yogurt and dark chocolate. 

Time Your Nutrient Intake

When you eat matters. Supplement your training with timely nutrition with these recommendations: 

  • Before a run: Eat a carb-rich meal 2-3 hours before training to build up your glycogen stores. Avoid eating anything high in fiber or fat, as they take longer to digest and can lead to stomach issues. 
  • During a run: Replenish your energy stores with energy gels and sports drinks. Aim to eat 30-60 grams of carbohydrates every 60 minutes after the first hour. 
  • After a run: Eat carbs within an hour post-run to help restore your glycogen stores. Supplement them with protein. The first 30-60 minutes after a run cover the “recovery window,” which is when your muscles are ready to absorb nutrients and kick-start the repair process. 

How to Prevent Injury and Boost Recovery

Do warmups to avoid straining your body during intense running sessions.

Recovery is part of training. Here’s how you can make adaptations at this phase to help you get stronger: 

  • Listen to your body: Good pain is typically symmetrical, dull and achy muscle soreness, like tired legs or a temporary burning sensation during a run. Bad pain is often a sharp, localized or persistent pain that alters your mobility and may come with swelling, bruising and other symptoms. 
  • Do warmups and cooldowns: Do dynamic stretches, like leg swings and high knees, to warm up. To wind down after training, do static stretches, like holding a stretch for 30 seconds. 
  • Get enough sleep: Aim to have 7-9 hours every night to give your body enough time to repair muscles and recover. 
  • Commit to active recovery: During rest days, do gentle yoga, brisk walking and other light activities. These can increase blood flow to your muscles, which can reduce stiffness. 

Gear Essentials for Every Runner

Wear running shoes to stay comfortable even during long runs.

No marathon training guide is complete without a list of essential running wear. Complement your training with the right gear to prevent injuries and improve your performance. 

Running Shoes

Buy your running shoes around a half-size larger than your street shoes because your feet can swell on long runs. The extra space will help prevent black toenails and blisters. For the perfect pair, go to a specialty running store to get a gait analysis and proper fitting.

Socks

Choose moisture-wicking running socks to preserve your feet and stay comfortable during training. They’ll also prevent blisters. 

Apparel

Choose shirts, shorts and/or tights made from technical, moisture-wicking fabrics that prevent chafing and help regulate body temperature. Consider compression wear as well, as they can improve blood circulation and reduce muscle vibration, so you’ll have less muscle fatigue and soreness. 

Hydration Gear

Compare handheld water bottles, waist belts and hydration vests to determine what works best for you. Handhelds are great for short runs, while hydration vests are ideal for long runs, as they can store more water, your phone and energy snacks comfortably. 

More Marathon Training Tips That Work 

Commit to your training so you have confidence on the big day.

Now that you know the foundations of how to train for a marathon, why not optimize your plan even more with the following tips? 

Hack Your Training With Wearable Tech

From counting calories to steps, gadgets like smartwatches can help you track your progress and gather data that you can use to improve your training routine. Keep an eye on these crucial metrics: 

  • Heart rate zones: Training in specific zones can help target different systems. For example, zone 2 can build your aerobic base, while zones 4-5 can improve speed. 
  • Cadence: This is the number of steps taken per minute. A higher cadence is often associated with better efficiency and lower impact forces. 
  • Sleep quality: Here’s a metric that can help you monitor recovery. If your watch shows poor sleep, it might be better to do easy runs instead of intervals. 

Shake Up Your Routine With Retro Running

Running backward is an advanced technique that can help you break through plateaus and overcome boredom. Try it on a soft surface, like a track or grass, and start walking backward before attempting to jog. 

This exercise can make your lower body stronger, improve your balance, and enhance your agility. It uses your quads, calves and shins differently, which can help strengthen them and prevent overuse injuries from the repetitive forward motion of regular running. 

Your Marathon Is More Than a Race

Nurture the spark of ambition that led you to this training guide to stay motivated. Maintain a consistent training plan, fuel your body correctly, prioritize recovery and build your mental fortitude. When it’s time for the main event, trust your training. Enjoy the race-day experience. No matter the time on the clock, be proud of your accomplishment.  Remember, you’re not just a runner. You’re a marathoner — now go claim your finish line.  

Oscar-Collins

Oscar Collins

Founder and Editor-in-Chief of Modded

With almost 10 years of experience writing about cars, gear, the outdoors and more, Oscar Collins has covered a broad spectrum of topics during his time as a blogger and freelancer. Oscar currently serves as the editor-in-chief of Modded, which he founded to spread his love of cars with an international audience.