How to Start Running

The advice you’ll get, and why we’d do it differently

Ask anyone how to start running and you will be pointed at Couch to 5K. It’s a good plan: free, sensible, and built around walk breaks, which are the right idea.

But it asks you to hold nine weeks of prescribed intervals in your head. First it’s 1 minute on and 90 seconds off, then 90 seconds on and 2 minutes off, and two weeks later a 20-minute run arrives out of nowhere. Miss a week and you’re negotiating with a spreadsheet about whether you’ve failed.

Our experience is that beginners don’t quit because their intervals were wrong. They quit because the plan became one more thing to manage. So here is the whole plan:

Run three times a week. Cover the same 2 miles (3km) each time. Run as much of it as you comfortably can, at a pace barely faster than a brisk walk. Walk the rest.

There is no week 4 and no session B. The only thing that changes over time is how much of the 2 miles you end up running, and that changes on its own.

Why three times a week

Three is the number where things start compounding. Two runs a week maintains fitness and three builds it, while still leaving a rest day between every session, which is where the adaptation happens (more on that in active recovery vs rest days).

The NLstart2run cohort followed novice runners through exactly this kind of three-times-a-week start-to-run program and found participants were still meeting vigorous activity guidelines six months later, long after the program ended.¹ That six-month figure is the one that matters, far more than what you can do in nine weeks.

You can run more than three times a week if you want to, with one caveat. In your first couple of months the limit is your tissue, not your fitness. Your heart and lungs adapt within weeks, but bone, tendon and connective tissue take months. Adding a fourth run is fine once the three feel easy, and not before, and not because you had a good week. More on that in common beginner running mistakes.

Why 2 miles (3km), every time

Fixing the distance removes the biggest source of beginner decision fatigue: how far should I go today?

Two miles is roughly 30 minutes of mixed running and walking. It’s short enough that you’ll do it on a bad evening and long enough to count as training, and it fits a single loop from your front door that you’ll come to know by heart. Run the same route, at the same distance, three times a week, and the route becomes the plan.

It also gives you a built-in progress meter without any arithmetic. Because the distance never changes, everything else (how much of it you ran, how it felt, how long it took) compares directly with last week.

Plan the route before you plan anything else

Don’t improvise this. Sit down once, before your first run, and work out exactly where you’re going.

MapMyRun is the easiest way to do it. You can draw a loop from your own front door and it will tell you the distance as you go, so you can nudge it until it lands near 2 miles, or you can auto-generate a loop of roughly the right length and adjust from there. It also shows you an elevation profile, which is what matters most here. Routes can be exported as a GPX file if you want them on a watch.

Pick the flattest option you can find. That’s the point of the exercise, not laziness. A hill forces your effort up however slowly you try to take it, so you can be crawling and still be well past the conversational pace this plan is built on. For a beginner, a hilly 2 miles is a different and much less useful session than a flat 2 miles, not a slightly harder version of it. Flatten the route and the pace looks after itself.

Check that it’s safe. You want sidewalks or a proper path rather than a road with no shoulder, and lighting if you’ll be running in the dark, which you will be if you’re starting in the fall. Choose somewhere you’re happy to be alone. A loop that passes your front door partway around is ideal early on, because it gives you a free bail-out that you’ll almost never use but will be glad exists.

Then plan two or three of them. One route is the plan, but the same 2 miles three times a week does eventually go stale, and boredom quietly ends more running habits than injury does. Plan a couple of alternatives the same way, with the same distance, flatness and safety, and rotate when you feel like a change. What you’re keeping constant is the distance and the effort, not the scenery.

The session

Every run looks the same:

Twenty minutes is the target, not the entry fee. In week one you might manage six or eight minutes of running spread across the loop, which is a completely normal place to start. Run until you’d rather not, walk a minute or two until you feel like running again, then run again.

Keep the walk breaks short; one to two minutes is plenty. That’s long enough for your breathing to settle and your legs to stop complaining, and short enough that you don’t go cold and have to start all over again. Take them when you feel you need one, not when a timer says so. You’ll get this wrong for a few weeks, and then it becomes automatic.

Over the weeks the running gradually takes over and the walking fades out, until one day the whole 2 miles (3km) is a run. At the very slow pace described below, roughly 11:15 per mile (7:00/km), that’s about 21 minutes, so “20 minutes of running” and “you ran the whole loop” end up meaning the same thing.

Do not put a date on it. No target week, no race entry, nothing. Some people run the full 2 miles inside a month; plenty take considerably longer, and how long it takes tells you nothing at all about whether you’ll still be running in a year. Attach a deadline and you’ve turned a habit into a test, and habits survive bad weeks in a way tests don’t.

Slower than feels sensible

This is the part people get wrong, and it decides whether you’re still running next year.

Run at a pace you could hold a conversation at, in full sentences rather than gasped fragments. For most beginners that’s somewhere between a brisk walk and a jog, and it will feel absurdly slow. It should. If you’re breathing hard in the first two minutes, you are racing nobody.

There’s evidence behind this. The talk test has been repeatedly validated against laboratory gas analysis as a proxy for the first ventilatory threshold, the intensity above which your body starts accumulating fatigue faster than it can clear it.² If you can speak comfortably, you’re below it, which makes the talk test a free and surprisingly accurate lab test you carry around in your lungs.

The walk breaks do useful work too; they aren’t just buying time. A study of non-elite marathon runners compared a run/walk strategy against continuous running. Finish times were statistically indistinguishable (4:14 vs 4:08), but the run/walk group reported markedly less fatigue and muscle soreness, and while two continuous runners failed to finish, none of the run/walkers dropped out.³ If walk breaks hold up over 26.2 miles (42km), they will hold up over 2.

The first thirty runs are about your life, not your legs

This is the part nobody tells beginners, and it may be the most useful thing on this page.

For roughly your first thirty run/walks, about ten weeks at three a week, very little of what you’re doing is about fitness. Mostly it’s your life reorganizing itself around running. You work out which evenings suit you, discover that you can’t run straight after a big meal, and learn to get your gear dry in time for Thursday. You figure out what to do when it’s raining and dark and you’d rather not go, and whether you go better in the morning or not.

That is the work of this phase, and it’s why the plan is deliberately too simple to fail. Every bit of complexity you add is another thing to negotiate on the evening you’re tired.

The habit research lines up with this closely. A study of real-world habit formation found automaticity took a median of 66 days, ranging from 18 days to a projected 254.⁴ Thirty runs at three a week is about seventy days. The overlap is a reminder more than a coincidence: this takes as long as it takes, and the spread between people is enormous, which is exactly why you don’t set a date.

Somewhere around that point, three things change together. Your legs stop being sore between runs, the first half mile or so stops feeling like a negotiation, and the run stops being something you have to decide to do.

It also gets more enjoyable. Early running is largely unpleasant, and beginners tend to take that as a permanent verdict on running when it’s a temporary verdict on their fitness. Once you have some aerobic base, the same 2 miles at the same effort simply feels better. You’re not fighting for breath, you notice where you are, and you finish wanting to have gone further. Almost nobody quits after that point; nearly everyone who quits does so before it.

So the most useful way to see the first ten weeks is that you are not training so much as becoming a person who runs on Tuesdays. The fitness arrives on its own, slightly later, as a side effect.

What you need to buy

Almost nothing, and we mean that.

A decent pair of running shoes is the one thing worth spending on, and “decent” doesn’t have to mean expensive or prescribed. The pronation-control model of shoe fitting (get your gait analyzed, buy the shoe that corrects it) is not well supported. A 2022 review of running injury paradigms concluded that the evidence for any shoe-assessment paradigm is limited, and recommended clinicians simply point runners toward lightweight, comfortable shoes with minimal pronation-control technology.⁵ That reflects the comfort filter paradigm, which found no association between pronation or impact forces and injury: buy the shoe that feels best on your foot.⁶ Last season’s model at half price is fine.

After that, a cheap shirt and shorts. Any synthetic top that isn’t cotton will do, and store-brand is fine. Nobody has ever run slower because their shorts cost $10.

That’s the whole list: no compression socks, gels, foam roller or gym membership. Gear is not the barrier, and buying more of it is a very effective way of not going running.

The one upgrade worth stretching for

If you can afford one non-essential thing, make it a running watch.

We’d recommend it more strongly than the usual “it’s nice to have”. A watch turns the plan from something you remember into something you can see. It confirms that the 2 miles is 2 miles, and that your “extremely slow” is extremely slow. Most importantly, it quietly builds a record of three runs a week that becomes very hard to break.

The evidence for self-monitoring is better than most people assume. A systematic review and meta-analysis of consumer wearables found that trackers increased activity by around 1,800 steps and 40 minutes of walking per day.⁷ That’s more than a rounding error; it can be the difference between a habit forming and not.

You do not need a $750 multisport watch, because an entry-level GPS watch does everything above. A phone with a running app is a workable substitute, though carrying it is a small friction, and small frictions are exactly what stop people going out.

When it goes wrong

You only managed two runs this week. Then you did two runs. There’s no week to repeat and nothing to recalculate, because the plan is the same next week regardless. That’s the main advantage of having no plan.

The 2 miles feels harder than last week. Sleep, stress, a cold coming on and simply not eating enough all show up as heavy legs before they show up anywhere else. One bad run is information, not a verdict.

Something hurts. Learn the difference between muscular soreness that eases as you warm up and sharp, localized pain that gets worse as you run. The first is normal. The second means stop, especially along the shin or around the kneecap.

You want to go faster. Not yet. Speed is the reward for a base you haven’t built, so run more of the 2 miles instead.

Before your first run

Plan two or three 2-mile (3km) routes on MapMyRun, choosing the flattest options that are safe and lit, then run one of them three times a week with a rest day between each. That’s the entire plan.

On each run, aim to accumulate around 20 minutes of running at a pace where you could talk in full sentences (nearly everyone starts too fast), and walk the rest without guilt. Keep the walk breaks to one or two minutes, taken on feeling rather than by a timer. Build toward running the full 2 miles gently, and put no date on it whatsoever. Expect around thirty run/walks before your life, strength and fitness adjust, and before it starts being enjoyable.

For gear, buy shoes that feel comfortable rather than the ones a gait analysis prescribes, plus whatever shirt and shorts you already own. A GPS watch is the one worthwhile upgrade, mostly because it makes consistency visible.

When you can run the whole 2 miles at a conversational pace, and only then, start thinking about your first 5K.

This article is general information, not medical advice. If you have an existing health condition or persistent pain, speak to a doctor or physical therapist.

References

1. Kluitenberg B et al. The NLstart2run study: health effects of a running promotion program in novice runners, design of a prospective cohort study. BMC Public Health, 2013. ncbi.nlm.nih.gov
2. Persinger R et al. Consistency of the talk test for exercise prescription. Medicine & Science in Sports & Exercise, 2004. pubmed.ncbi.nlm.nih.gov
3. Hottenrott et al. Does a run/walk strategy decrease cardiac stress during a marathon in non-elite runners? Journal of Science and Medicine in Sport, 2016. pubmed.ncbi.nlm.nih.gov
4. Lally P et al. How are habits formed: modelling habit formation in the real world. European Journal of Social Psychology, 2010. onlinelibrary.wiley.com
5. Agresta C et al. Running injury paradigms and their influence on footwear design features and runner assessment methods: a focused review to advance evidence-based practice for running medicine clinicians. Frontiers in Sports and Active Living, 2022. ncbi.nlm.nih.gov
6. Nigg BM et al. Running shoes and running injuries: mythbusting and a proposal for two new paradigms: ‘preferred movement path’ and ‘comfort filter’. British Journal of Sports Medicine, 2015. pubmed.ncbi.nlm.nih.gov
7. Brickwood KJ et al. Consumer-based wearable activity trackers increase physical activity participation: systematic review and meta-analysis. JMIR mHealth and uHealth, 2019. mhealth.jmir.org