How to build endurance: easy minutes, a few hard ones, and time

Endurance is how long you can keep going. For most people it means cardio fitness: walking, running, cycling or climbing stairs without having to stop. A 2000 review explains that VO2 max, the highest rate your body can take up oxygen, sets the upper limit for endurance performance, and that how economically you move and how much of that ceiling you can hold also decide it.¹ The other kind is muscular endurance: how many reps a muscle can do before it gives out. "Stamina" is the everyday word for both, and this page covers both.

It's a page about how endurance is built, not a promise about how far or how long you'll go. The studies below measured groups of people; your own pace depends on where you start and things a page can't see.

1. Do most of it at an easy pace

The base is time spent moving at a pace you can hold. The World Health Organization's 2020 guidelines ask adults for 150 to 300 minutes of moderate aerobic activity a week, or 75 to 150 vigorous.² Finding a steady pace doesn't need a lab: in 16 physically active volunteers, 30-minute runs held at the last stage where they still passed the talk test produced intensities the authors judged compatible with training in healthy adults.³ That talking pace is where most of the minutes go. How to find it: zone 2 cardio. How many minutes, and a build-up for beginners: how much cardio per week.

2. Add one or two harder sessions a week

Both kinds of cardio work, and intervals can work a little more. A 2015 meta-analysis of 28 controlled trials in 723 healthy adults aged 18 to 45 found steady endurance training raised VO2 max by about 4.9 mL/kg/min against no exercise and interval training by about 5.5; head to head, intervals came out about 1.2 ahead, a possibly small benefit.⁴ In 40 moderately trained men, three days a week for 8 weeks, intervals of 4 minutes at 90 to 95% of maximum heart rate with 3 minutes of active rest raised VO2 max 7.2%, more than steady running matched for total work.⁵ A 2019 meta-analysis of 53 trials found that only intervals of 2 minutes or more, high-volume sessions (15 minutes or more, in the review's classification) and programs of 4 to 12 weeks or longer did better than steady training.⁶ Which to lean on: HIIT vs steady-state cardio. The sessions themselves: how to improve VO2 max and the HIIT workout.

3. Add time before speed

The WHO's advice for anyone not yet at its numbers is to start with small amounts and gradually increase how often, how hard and how long.² A practical order, not a protocol from a trial: first another session in the week, then a few more minutes on one session at a time, and only then a faster pace. If running is the goal and it's new, walk-run intervals are one way in: running vs walking covers both, and treadmill vs outdoor running where to do it.

4. Lift too

Lifting belongs in an endurance week too. A 2016 meta-analysis of 5 studies in 93 competitive middle- and long-distance runners found that 8 to 12 weeks of strength and jump training two or three times a week had a large beneficial effect on running economy, a measure of how economically someone runs.⁷ That's a measurement in well-trained runners, not everyone. Against doing no exercise, the American College of Sports Medicine's 2026 overview of 137 systematic reviews also found resistance training improved muscular endurance.⁸ How to fit both into one week, and whether cardio gets in the way of lifting: cardio and lifting. Where to start the lifting: how to get stronger.

5. For muscular endurance, higher reps and shorter rests

The ACSM's 2009 position stand recommends light to moderate loads, 40% to 60% of a one-rep max, for more than 15 reps a set, with rests under 90 seconds, to train local muscular endurance.⁹ The evidence for a special endurance rep range is thinner than the advice: a 2021 review calls the evidence for a light-load effect on muscular endurance rather weak.¹⁰ Short circuits also count: in the four-week trial of 22 recreationally active women, the group doing 8 rounds of 20 seconds of one bodyweight exercise four days a week improved muscular endurance, from leg extensions to push-ups, which the authors describe as an added benefit over the group on 30-minute treadmill sessions.¹¹ The rep ranges side by side: how many reps.

6. Keep it once you have it

Endurance doesn't need the full week forever. A 2021 review of the least training needed to hold on to fitness found that in general populations, endurance performance could be kept for up to 15 weeks on as few as two sessions a week, or with a third to two-thirds less volume, as long as the intensity stayed the same.¹² On a busy stretch, keep two sessions a week, one of them the hard one, at the same effort. Days off: rest days.

A sample week

A practical layout of the list above beside two lifting days, not a protocol from a trial. The easy days are at a talking pace; the interval day is the 4-by-4 shape from the 8-week trial,⁵ with effort standing in for heart rate.

New to cardio? Start with the easy days only for two weeks, then add the interval day. Keep the hard day away from a heavy leg day; cardio and lifting covers how far apart.

Common questions

How do you build endurance for running?

The same list, done as running: mostly easy runs, one harder session a week, and time added before pace. The 4-by-4 trial above was all running,⁵ and the strength-training result above was measured in well-trained competitive runners.⁷ If running is new, running vs walking and the treadmill workout are the places to start.

How do you build endurance fast?

No page can promise a timeline. What the trials measured: in the 2019 meta-analysis, interval programs of 4 weeks or less already improved VO2 max against doing nothing, with longer programs doing more;⁶ the 4-by-4 trial ran 8 weeks.⁵ Those are groups on set programs. The part in your control is the number of weeks you actually do it.

Is stamina the same as endurance?

In everyday use, yes: "stamina" usually means being able to keep going, which is endurance. Research tends to split it into cardio fitness, measured as VO2 max,¹ and muscular endurance, measured as reps; this page covers both.

Can you build endurance without running?

Yes. The four-week circuit trial above used bodyweight moves and no running.¹¹ Trials on a bike and a jump rope are on how to improve VO2 max without running and the jump rope workout.

The other goals

Endurance is one of three goal questions on this site with an answer like this one. How to get in shape is the broad version, how to get stronger the lifting one, and how to build muscle the size one.

If you'd rather have the week planned

Easy days, hard days and lifting days only work when they land in the right order, and that's a scheduling problem as much as a training one. Coaching is the version where your workouts are built around the days you actually have, and a weekly call looks at the week you just had and rebuilds the next one around what's coming. Coaching for a week that doesn't hold still explains how that works, and apply is the first step. Otherwise: do 30 easy minutes this week, at a pace you could talk through, three times.