“I don’t run yet. But I want to do a marathon. Can I be ready in six months?”
Before answering, I want to know what “I don’t run” means. Does this person swim and cycle regularly? Or have they barely exercised for several years? Those are different starting points for a first marathon.
For someone starting from zero, without a habit of regular training, I suggest allowing at least 9–12 months. Sometimes it takes more than a year. Even with good health and time to train consistently, I don’t promise readiness for a specific date in advance.
I want you to finish wanting to run again. To keep enjoying the sport, rather than taking home a medal and never wanting to put your running shoes on again.
How long to train: establish your starting point first
You don’t run or exercise regularly. My planning guideline is 9–12 months or longer. First we learn to run consistently, then build a base, and only then move into marathon preparation.
You do another sport regularly but hardly run. General endurance helps, but it cannot determine your marathon date on its own. We need to see how you handle running specifically.
You have been running consistently for several months. We can discuss a dedicated marathon cycle. Its length depends on the plan and your base. A short plan cannot automatically be applied to someone starting from zero.
You are returning after injury or a long break. First we assess where you are now and restore consistency. A previous result does not replace current readiness.
What research says, and what it cannot prove
A 2015 meta-analysis reported 17.8 running injuries per 1,000 hours in novice runners and 7.7 in recreational runners. These were groups with different experience levels. This does not establish that preparing in six months increases injury risk exactly 2.3 times, or that nine months protects against injury. Studies also differed in their injury definitions and participants. Meta-analysis by Videbæk and colleagues.
A study of first-time New York City Marathon runners found that previous half-marathon experience was associated with a lower likelihood of injury. This is an association, not proof that everyone must race a half marathon first. It does make sense to consider previous running experience when planning. Toresdahl and colleagues.
My 9–12 month guideline is a practical coaching choice for someone starting from zero. I am not presenting it as a precise minimum that researchers have established for everyone.
Four stages with a clear timeline
Here is one example of a sequential path. It shows where the time goes, but does not replace an individual plan. We move to the next stage when you are ready, not simply because a calendar date has passed.
An example for someone starting from zero
Start running
8–12 weeksAlternate walking and running. Build a manageable, consistent training habit.
Build your base
12–20 weeksDevelop running endurance. Work towards the starting load of your chosen marathon plan.
Marathon-specific training
17 weeksPractise the demands of the distance: long runs, pacing, fuelling and drinking.
Taper for race day
3 weeksReduce training load before the marathon. Allow time to recover.
Stages 3 and 4 = one 20-week cycle. The taper is already included, not added again.
About 9–12 months. Progress when you are ready. You may need longer.
This is a planning example, not a standard everyone must meet. Illness, injury, recovery difficulties or a long break can extend any stage.
The first stage needs manageable work, repeated consistently. There is no need to prove every week that you can do more.
In the second stage, consistency matters. You can handle several weeks of ordinary training, not just one successful run. Pain is not increasing, training fits into your life, and you recover afterwards.
The third stage is specific to the marathon. We consider long runs, overall training load and recovery. During the taper, we stop trying to squeeze in everything we missed earlier.
How to choose a race date
“I can already run for an hour” is not enough for me.
I look at how long someone has trained consistently, the weekly volume they tolerate, their experience of long runs, recurring pain and persistent fatigue. Then I compare that with the first week of the intended marathon plan.
Running for 60 minutes once and being ready to sustain marathon training are different things. We choose the race date after that assessment.
Rethinking a few training assumptions
The long run matters, but it can be moved, shortened or cancelled depending on how you are doing. It should not happen at any cost.
Weekly intervals are not a requirement for a first marathon. You do not need to seek out sessions that leave you unable to move. The difficulty should match your fitness.
We set the longest run individually. I consider time on your feet as well as distance, overall training load and recovery afterwards.
Running the full distance in training should not become an entrance exam for the race.
What if you are unsure about your health?
Having no symptoms does not guarantee that every training load suits you. With a known medical condition, current injury or concerning symptoms, discuss exercise with a doctor first. The doctor determines what assessment is needed, rather than a blanket rule that everyone over forty needs an exercise stress test. Screening considers symptoms, medical conditions, current activity and intended exercise intensity. ACSM screening recommendations.
Health is a starting condition for choosing an appropriate load. It does not remove the time needed to prepare.
Frequently asked questions
Can I prepare from zero in six months?
I don’t offer that as the standard route for someone without a training base. I allow at least 9–12 months for planning, with the option to postpone the race. Someone else’s quick finish does not tell us which route will suit you.
What about three months?
For someone starting from zero, I don’t recommend choosing a marathon three months away. That can be time to establish your first regular runs. If you already have a running base, we need to discuss your current condition and a specific plan. Also, 16 weeks is almost four months, not three.
If I am healthy, will I definitely be ready in a year?
There is no calendar guarantee. Consistency, tolerance of training load, recovery and how preparation unfolds all matter.
Do I need to run a half marathon first?
You will cover the half-marathon distance during your marathon preparation, on long training runs. Entering a half-marathon race is a separate question.
If you want to test yourself at an event, it is excellent racing practice. Above all, it is psychological practice: experiencing pre-race nerves, being among other runners and holding your own pace when everyone around you surges ahead.
A race is not a training session. You need experience here too, from getting ready in the morning and waiting in the starting corral to managing your emotions over the opening kilometres. These are things to practise before the marathon.
We schedule that race within the training cycle and allow recovery time afterwards. You do not have to race for a personal best.
What should I do if I miss a week?
Don’t pile missed sessions onto the following week. Assess why you stopped and how you feel now, then adjust the plan. Sometimes the race date changes too.
I want the marathon to become part of your sporting life. First we create the conditions that let you prepare. Then we choose the finish line.
Inna Ryzhykh - running and triathlon coach, Master of Sport. 20 years in professional sport and 8+ years of coaching: I train athletes and grow amateur triathlon with team REDHEAD. My own half marathon is under 1:30.
Want to train with a coach watching over you - see how we can work together or check my athletes' results. And if 42.2 still scares you - start with a half marathon on three runs a week.
This material is for information purposes. If you have cardiovascular or musculoskeletal conditions - consult a doctor before starting training.