Marathon Training Plan: How to Train for Your First Marathon
Training for your first marathon can feel complicated.
How many times should you run each week? How long should your longest run be? Should you be doing speed work? What pace should you run at? And how do you fit all of that around work, family and everything else?
The good news is that marathon training doesn't need to be complicated.
What it does need is consistency, progression and a plan that works for you.
After 18 years in endurance sport and more than a decade coaching athletes, one thing I've learned is that the best marathon training plan isn't necessarily the hardest one.
It's the one you can consistently complete.
Whether your goal is simply to cross your first marathon finish line or chase a particular finishing time, here's how I'd approach preparing for 26.2 miles.
How Long Should You Train for a Marathon?
For most runners, 16 weeks is a good length of time for a dedicated marathon training plan.
That assumes you already have some basic running fitness and can comfortably run several times per week.
If you're starting from very little running, I'd recommend spending some time building your general running consistency before beginning a 16-week marathon-specific block.
One of the biggest mistakes first-time marathon runners make is thinking more training is automatically better.
It isn't.
Your training needs to progressively increase the demands on your body while still giving you enough time to recover and adapt.
That balance is where improvement happens.
How Many Times a Week Should You Run When Training for a Marathon?
For many first-time marathon runners, four runs per week can work extremely well.
A typical week might include:
1 easy/recovery run
1 quality session such as tempo, threshold or intervals
1 steady or marathon-specific run
1 long run
Some runners will benefit from five or six runs per week, while others will make excellent progress on four.
Your training history, current fitness, available time and ability to recover all matter.
That's exactly why I don't believe everybody should follow the same generic marathon schedule.
Your Long Run Is Important — But It Isn't Everything
The long run is understandably the session most people associate with marathon training.
And yes, it's important.
Long runs develop endurance, improve your ability to use fuel efficiently and prepare your body and mind for spending several hours moving.
But there's a common mistake:
Trying to prove you can run the marathon before race day.
You don't need to run 26.2 miles in training.
Your long runs should build progressively throughout the training block, with easier weeks included to allow your body to recover.
For many runners, the longest training runs will fall somewhere around 18–22 miles (29–35km) depending on their experience, pace and overall training load.
The goal isn't to finish every Sunday completely destroyed.
It's to absorb the training and be capable of training again the following week.
Most of Your Running Should Feel Easy
This is one of the hardest things for runners to get right.
Easy runs need to be easy.
If every run turns into a moderate effort, you accumulate fatigue without necessarily getting the benefit you would from either genuinely easy running or properly executed quality sessions.
Easy running helps build your aerobic system while keeping the recovery cost relatively low.
Don't worry about what your pace looks like on Strava.
Run at an intensity where you feel controlled and could comfortably hold a conversation.
Save the hard running for when it actually matters.
Should Marathon Runners Do Speed Work?
Yes — but it needs a purpose.
Training for a marathon doesn't mean simply running further and further every week.
Depending on the athlete and stage of the programme, I use sessions involving:
Threshold running to improve the pace you can sustain aerobically.
Intervals to improve running economy and higher-end aerobic fitness.
Marathon-pace running to make your intended race intensity increasingly familiar.
As the marathon gets closer, training should become progressively more specific to the demands of race day.
You don't need to smash yourself in every session.
Train with purpose rather than simply training hard.
Practice Your Marathon Pace
If you have a target finishing time, some of your training should prepare you specifically for that pace.
But there's a big difference between running marathon pace for 20 minutes when fresh and maintaining it deep into a marathon.
As your training progresses, marathon-specific running can be incorporated into longer sessions.
Rather than running every long run at one steady pace, certain sessions might include controlled sections at your planned marathon effort.
The exact amount should depend on your experience and fitness.
The objective is to arrive at race day thinking:
I've practised this. I know what this effort feels like.
Don't Ignore Strength Training
Running more isn't always the solution.
A sensible strength programme can help you become a stronger, more robust runner and cope with the increasing training load.
It doesn't need to mean spending hours in the gym.
For many runners, one or two focused strength sessions each week can complement their running.
Exercises targeting the calves, hamstrings, glutes, quads and trunk can all form part of a well-rounded programme.
As your running volume increases, strength work may need adjusting so it supports your marathon training rather than competing with it.
Practice Your Marathon Fuelling in Training
Your race-day nutrition shouldn't be something you figure out on the morning of the marathon.
Long runs are your opportunity to practise.
That includes carbohydrate intake, hydration, electrolytes, breakfast, caffeine if you use it, and even what time you eat.
Your gut can be trained just like the rest of your body.
Gradually practise taking carbohydrate during longer sessions and establish a strategy that you know your stomach can tolerate.
Never introduce something completely new on marathon morning because somebody at the expo told you it was a good idea.
Nothing new on race day.
Recovery Is Part of Marathon Training
You don't become fitter while you're training.
Training provides the stimulus.
Recovery is when your body adapts to it.
Sleep, nutrition and genuinely easy days become increasingly important as your mileage increases.
One of the biggest mistakes I see is runners completing a great session and then compromising the next three days because they've pushed far harder than necessary.
Consistency over 16 weeks beats a handful of heroic sessions. Every time.
What Happens If You Miss a Marathon Training Session?
Don't panic.
Life happens.
Work gets busy. Children get ill. You travel. Sometimes you're simply exhausted.
Missing one training session won't ruin your marathon.
Trying to cram missed sessions into the following few days can cause far more problems.
Look at the bigger picture.
If you've consistently completed your training over several months, one missed Tuesday session isn't going to determine what happens on marathon day.
The Marathon Taper
The final few weeks aren't the time to squeeze in the training you think you've missed.
Your fitness has already been built.
The purpose of the taper is to reduce fatigue while maintaining fitness and keeping your legs ready to race.
Training volume gradually reduces while some intensity can remain.
It's completely normal during the taper to suddenly question your fitness, feel strange on easy runs or convince yourself you've lost everything.
You haven't.
Trust the work you've done.
The Biggest Marathon Training Mistake
If I could give a first-time marathon runner one piece of advice, it would be this:
Don't train for one great week. Train for 16 consistent ones.
You don't need to win Tuesday's interval session.
You don't need to run your long run faster than your mate.
And you certainly don't need to prove your fitness every weekend.
Stack good weeks together. That's where marathon fitness comes from.
A marathon is a huge challenge — and crossing that finish line for the first time is something you'll remember forever.
But getting there doesn't require your life to revolve around running.
Your training needs to work around your fitness, your experience and your life.
That's why I've created the GBC 16-Week Personalised Marathon Training Plan.
Rather than downloading a generic schedule and trying to make your life fit around it, your training is built around you — your current ability, your available training days and your marathon goal.
Choose your finish line. Then let's build the plan to get you there.