How to get back into running?

You used to run. Maybe it was three easy miles before work, or a half marathon a few years ago. Then a new job, a new baby, an injury or a long winter got in the way, and now the first run back feels like borrowing someone else's legs.

Comebacks usually go one of two ways. You head out at your old pace and your old distance, feel wrecked, and wake up a week later with a sore shin. Or you dread how hard it will feel and keep putting it off. Neither one means you've stopped being a runner. Both come from starting without a plan that fits the break you just had.

This page shows you how to get back into running based on how long you've been away: what you've actually lost, where to restart, a 4-week plan to start running again, the exercises that get your legs ready, and how to come back after an injury or pregnancy. If you've never run before, our guide on how to start running has the from-scratch plan instead.

How to Ease Back Into Running: 7 Steps

1. Find your restart point. How long you've been off decides where you begin, and the table further down gives a starting point for each length of break. If you had an injury in the past year, start one row lower.
2. Restart by minutes, not miles or pace. Plan each run as a number of minutes at an easy effort, and ignore your old splits for the first few weeks. Chasing your old pace is how most comebacks end in a sore shin.
3. Run three days a week, never two days in a row. For the first month, leave a rest day or a strength day between runs so your legs get a full day to adapt.
4. Keep every run easy. You should be able to talk in full sentences. Save intervals, hills and races for after the first two to three weeks.
5. Use walk breaks after a month or more off. Planned one-minute walks let you stay on your feet longer while each stretch of running stays short. Plenty of experienced runners use them too.
6. Strength-train twice a week. Calf raises, split squats and single-leg work prepare the tendons and muscles that absorb each landing. Twenty minutes is enough.
7. Change one thing at a time, and let pain decide. Lengthen one run or add one day in a given week, never both. A mild ache that settles by the next morning is fine. Pain that builds during a run, makes you limp or sits on one spot of bone means stop.

How Much Running Fitness Do You Lose During a Break?

Less than it feels like on the first run back. The breathlessness is real, but most of it comes from changes in your blood and heart that reverse quickly once you train again.

After two weeks off

Houmard and colleagues (1992) had 12 trained distance runners stop running for 14 days. Their VO2 max fell from 61.6 to 58.7 mL/kg/min, about 4 percent. Time to exhaustion on a treadmill test fell 9 percent, and their heart rate at the same running speeds rose by 11 beats a minute, which is why your old easy pace suddenly feels like work. Their running economy, the oxygen cost of running at a given speed, didn't change, and their muscle fibers didn't shrink. Two weeks off mostly costs you some blood volume and some aerobic enzymes in your muscles. Your stride and your muscle are still there.

After a month or two off

The classic study of a longer break comes from Coyle and colleagues (1984), who followed seven endurance athletes after they stopped training completely. VO2 max fell 7 percent in the first 21 days and levelled off about 16 percent below its trained value by day 56. Even after 84 days, they were still fitter than sedentary people who had never trained, partly because the extra capillaries around their muscle fibers hadn't gone anywhere. Our review of the detraining research walks through these studies and what happens to strength, and our guide to getting back into working out covers the comeback mindset beyond running.

After several months or years

Past three months, the gap between you and a true beginner narrows. You still have one real advantage: you know what easy running should feel like and how to pace a run, which most beginners have to learn the hard way. What's mostly gone is the tolerance your legs had built for thousands of landings a week, and that tolerance is the part that takes longest to rebuild.

Why Your Lungs Come Back Before Your Legs Do

This is the trap in almost every comeback. Within two or three weeks of running again, your breathing settles and your old pace starts to feel possible. Your heart and lungs are ready to do more. Your Achilles tendons, shins and feet often aren't.

Tendons are slow tissue. Using carbon dating from nuclear test fallout, Heinemeier and colleagues (2013) showed that the core of the adult Achilles tendon is laid down while you're still growing and is barely renewed afterward. Tendons do adapt to training, mainly by getting stiffer, but they need heavy loads and weeks to do it. In a meta-analysis of 27 exercise studies, Bohm and colleagues (2015) found that tendon stiffness rose clearly when programs loaded the muscle above about 70 percent of maximum effort, with an effect size of 0.90, and barely changed at lighter loads, at 0.04. Every program in the analysis lasted at least 8 weeks.

Bone works on a similar lag. In their review of bone stress injuries in distance runners, Warden and colleagues (2014) describe these injuries as microdamage building up faster than bone can repair it, and they point out how often the injuries come back. They list three ways to reduce the load: sensible training plans, softer landings or a slightly quicker step, and stronger muscles around the bone, such as the calves for the shin.

So let your legs set the pace of the comeback, not your breathing. If a run feels easy on your lungs, keep it that way for another week. That easy feeling means your legs are getting a dose they can handle.

Why returning runners get hurt

Two systematic reviews point the same way. Saragiotto and colleagues (2014) looked at 11 prospective studies with 4,671 runners and found that the main risk factor for a running injury was an injury in the previous 12 months, reported in 5 of the 8 studies that checked for it. Van der Worp and colleagues (2015) reviewed 15 cohort studies, found strong and moderate evidence that a previous injury raises the risk, and found that restarting running was more strongly linked with injury in men than in women. Plenty of comebacks start after an injury, so many returning runners carry both risks at once.

Where to Restart: Your Comeback by Length of Break

Use this table as a starting point. The ranges are coaching guidance built on the detraining studies above, not results from a trial, so adjust them to how your body responds.

Had an injury in the past year, or did something hurt before you stopped? Start one row lower than your time off suggests.

How to get back into running after 2 weeks

After two weeks off, you can usually run your normal routes at a slightly slower pace. Keep your usual running days, cut each run by about a quarter, and keep everything easy. Leave hills, intervals and your long run until week 2. If the first three runs feel normal, go back to your old week.

How to get back into running after a month off

A month off is the break most people underestimate. Start with about half your old weekly running time, spread over three easy runs with a day off between them, and skip speed work for two weeks. If you were already slowing down before the break, or something hurt, use walk breaks and start at week 1 of the plan below.

After 3 months, a year or longer

After three months or more, start with run-walk intervals even if running continuously feels possible. Your lungs may be ready for it, but your legs usually aren't yet. After six months or more, treat yourself as a beginner who already knows how to pace, and follow the full run-walk progression in our beginner running guide. If a 20-minute walk feels hard right now, begin with the walking base in our guide to starting to run when you're out of shape.

A 4-Week Plan to Start Running Again

This plan is for someone who ran regularly before and has been off for one to three months. Run three days a week with at least one day between runs. Start and finish each session with 5 minutes of brisk walking. If you've been off for two to four weeks and feel good, start at week 3.

• Move up only when you're ready. Go to the next week when the last running block felt as easy as the first and your legs feel normal by the next morning. If not, repeat the week.
• Lift twice a week. Do the exercises below on days you don't run, or right after an easy run.
• Hold week 4 before you build. Keep three easy runs a week for another week or two before you add a fourth run, strides or a longer run.
• Missed a few days? Repeat the last week you finished instead of jumping ahead.

When to Add Speed and Distance Back

Once you've done two to three weeks of easy running with no niggles, add 4 to 6 strides to the end of one run a week. A stride is 15 to 20 seconds of quick, relaxed running, followed by a full walk back to where you started. A week or two after that, try one short session of faster running, such as a few minutes at a steady, comfortably hard effort.

Add distance one run at a time. Watch your longest run more closely than your weekly total: the research summarized in our beginner running guide links injuries more strongly to single runs that jump well past your recent longest run than to weekly mileage. And judge your progress by how runs feel rather than by your old training log. Your old easy pace usually comes back well before your old race times do.

Getting Back Into Running After Injury

After a bone stress injury, surgery or any injury that changed how you walk, your physical therapist or doctor should set the timeline. Bone stress injuries in particular tend to recur, as Warden's review notes, so a slow return matters more there than anywhere else. For everything else, two checks help you decide when to run and how hard to push.

Check that you're ready before the first run

Before your first run back, test your legs with a few simple tasks. Each one should be pain-free:

• Walk briskly for 30 minutes.
• Balance on one leg for 10 seconds, on each side.
• Do 10 slow single-leg squats to a chair on each side.
• Jog on the spot for 1 minute.
• Hop on the spot 10 times on each leg.
• Do single-leg calf raises until you tire, and get a similar number on both legs.

If one leg is clearly weaker or anything hurts, spend another week or two on the strength work below before you run.

Use pain as your guide

You don't always need total rest from running while a tendon settles. In a trial of 38 people with Achilles tendinopathy, Silbernagel and colleagues (2007) let one group keep running and jumping using a pain-monitoring model, while the other group stopped those activities for 6 weeks. Both groups did the same rehab exercises, and continuing to run caused no harm. Under that model, pain during activity can reach 5 on a 0-to-10 scale, it should settle by the next morning, and it shouldn't build from week to week.

That model was tested on Achilles tendon pain. Bone pain is different. Pain on one spot of a shin or foot bone, pain that gets worse as you run, or pain at rest means stop running and get it checked.

Returning to running after pregnancy

After giving birth, a 2024 international Delphi study of clinicians and exercise professionals by Christopher and colleagues recommended at least 3 weeks of rest and recovery, then an individual timeline and a gradual return rather than one fixed date. It also recommended screening for medical and psychological concerns, current physical capacity and prior training before the first run. A companion statement by Deering and colleagues (2024) recommended starting with a walk-run protocol, building duration and intensity gradually, and adding strength training. A pelvic health physiotherapist can do that screening with you.

Exercises to Get Back to Running

The strength work that matters most for a comeback targets the tissues that adapt slowest: your calves and Achilles tendons first, then your quads and hips. Do these twice a week with bodyweight or dumbbells.

1. Single-leg calf raise: 3 sets of 10 to 15 per leg, lowering slowly. Hold a dumbbell once it gets easy, and do one set with your knee bent to work the deeper soleus muscle.
2. Dumbbell split squat: 3 sets of 8 to 12 per leg.
3. Step-down: stand on a low step and slowly lower one heel to the floor, 3 sets of 8 per leg. It trains your quads to control each landing.
4. Single-leg Romanian deadlift: 3 sets of 8 per leg with a dumbbell, for your hamstrings, glutes and balance.
5. Pogo hops: small, quick bounces on the balls of your feet, 2 to 3 sets of 20, once the calf raises feel easy. They bring back the spring of running in a small, controlled dose.

Make the calf raises heavy enough that the last few reps are hard. Bohm's meta-analysis found that tendons respond to high loads and barely change with light ones.

If you'd rather have those two strength sessions planned for you, a workout app that keeps you motivated can handle them. In FitCraft, a 3D AI coach demonstrates each bodyweight and dumbbell exercise, the workouts adjust as you progress, and streaks reward the days you show up between runs.

What This Means for You

Getting back into running is mostly a patience problem. Much of the fitness you built is still there, your heart and lungs will catch up within weeks, and the main risk is asking your legs for your old training before they're ready for it.

Picture six weeks from now: three easy runs on the calendar, legs that feel springy instead of beaten up, and a first faster session that feels like a treat. You won't get there through one big run. You'll get there by showing up for a lot of small, easy ones. Most comebacks stall when one bad week turns into another long gap, so make the next run small enough that you'll actually do it.