What is a recovery run?

You ran hard yesterday. Maybe it was intervals, a tempo run or the longest run you've done in months. Today your plan says recovery run, your legs feel heavy, and you're not sure whether 30 slow minutes will help or just pile on more wear.

Most runners get this run wrong in one of two ways. They run it too fast because slow running feels a little embarrassing, or they skip it and then feel guilty about the gap in their week. Both habits come from the same all-or-nothing idea: that a run only counts if it's hard.

Below you'll find the pace and heart rate to aim for, how a recovery run differs from an easy run, how to run one, what the research says it does and when a rest day is the better call.

What Makes a Run a Recovery Run

A run counts as a recovery run when it meets three conditions:

1. It follows a hard day. It comes the day after intervals, a tempo run, a race or your long run. Runners who train twice a day sometimes do it the same evening.
2. It's shorter than your normal easy run. Most recovery runs last 20 to 40 minutes, which is about 2 to 4 miles for a recreational runner.
3. It's the easiest running of your week. You can talk in full sentences from start to finish, and you finish feeling better than when you started.

Physiologically, a recovery run is an easy run shortened and slowed for a tired day. In their 2022 review of how world-class distance runners train, Haugen and colleagues point out that calling easy runs recovery runs assumes they speed up recovery before the next hard session, and no study supports that. The best marathon and track runners in the review do at least 80 percent of their running at low intensity over 11 to 14 sessions a week, with easy runs placed before or after hard ones. So the name promises more than the run delivers, and its real value lies elsewhere.

Recovery Run Pace and Heart Rate

Set a recovery run by effort and let the pace fall where it falls. You have three ways to check the effort, and they should agree:

• Talk test: you can speak in full sentences without stopping for breath. Our guide on how to pace yourself running explains why the talk test works.
• Perceived effort: about 9 to 12 on the 6-to-20 Borg scale, where 9 means very light and 11 means light. On a 1-to-10 scale that's roughly a 2 or a 3.
• Heart rate: the bottom half of the easiest training zone, roughly 60 to 66 percent of your maximum heart rate.

Those heart rate numbers come from the seven-zone scale Haugen and colleagues use for long-distance runners. These are its three easiest zones:

Zone numbers aren't standard across watches and coaches. By heart rate, this scale's zone 1 lines up with what many watches label zone 2, and with the 60 to 70 percent range in our own zone 2 definition. Whatever your device calls it, keep a recovery run at the bottom of the easiest range.

Recovery run heart rate by age

If you don't know your maximum heart rate, the formula from a meta-analysis of 351 studies by Tanaka and colleagues (2001), 208 minus 0.7 times your age, gives a reasonable estimate. Here's what it means for your recovery and easy runs:

Your own maximum may sit 10 or more beats above or below the estimate, so use the table as a first guess and let the talk test settle it. If you take a medication that slows your heart rate, skip the numbers and go by feel.

How slow should a recovery run be?

Slower than your normal easy pace, and probably slower than feels respectable. Start 30 to 60 seconds per mile slower than your usual easy runs, about 20 to 40 seconds per kilometer, and let the talk test adjust it. Part of that slowdown just keeps the effort steady. In a study by Braun and Dutto (2003), nine trained runners and triathletes ran downhill for 30 minutes. Two days later the same speeds cost them 3.2 percent more oxygen, with shorter strides and higher blood lactate. On legs like that, a 10:00 mile costs roughly what a 9:41 mile normally would, so holding yesterday's pace means working harder than you think.

What Is an Easy Run?

An easy run is your everyday run: a steady, conversational effort that builds your aerobic base without leaving you tired the next day. Haugen and colleagues put world-class runners' easy runs at 40 to 70 minutes, and most recreational runners do 30 to 60. You should finish feeling you could have kept going.

Easy runs and recovery runs use the same effort zone. What separates them is length, timing and how strict you are about the pace:

If you run three days a week, every run that isn't hard is an easy run, and your rest days do the recovering. Recovery runs start to matter once you run the day after a hard session. For the evidence on keeping most of your week this easy, see our review of polarized training research.

Types of Runs: Where the Recovery Run Fits

Most training plans are built from four main types of runs: easy runs, long runs, tempo runs and intervals. Recovery runs, fartleks and race-pace runs fill in around them:

The hard sessions in that table are what a recovery run recovers from. Our guide to the tempo run covers threshold effort, and our guide to fartlek training covers the surge-and-jog version of speed work.

How to Run a Recovery Run

1. Pick the right day. Run it the day after intervals, a tempo run, a short race or your long run. After a marathon, take several days off running first.
2. Keep it short. Aim for 20 to 40 minutes, and no more than about two thirds of your normal easy run. Newer runners can stop at 15 to 20 minutes.
3. Choose a flat, forgiving route. A park loop, a towpath, a track or a treadmill all work. Skip long downhills, the kind of running that caused the muscle damage in the study above.
4. Start slower than slow. Jog the first five minutes barely faster than a walk, then settle at an effort where you could chat.
5. Run by feel. No pace targets, strides or surges. If your watch tempts you, switch the screen to heart rate.
6. Walk when you need to. A run-walk mix at a low heart rate still counts as a recovery run.
7. Stop if your stride changes. A limp, a sharp pain or soreness that gets worse as you go means today is a rest day.
8. Keep tomorrow easy too. Your next hard session should wait at least another day.

How long should a recovery run be?

For most recreational runners, 20 to 40 minutes, or roughly 2 to 4 miles (3 to 6 km), which makes it the shortest or nearly the shortest run of your week. World-class runners run longer easy sessions, but they also run 11 to 14 times a week. If your legs still feel heavy 10 minutes in, cut it short or finish with a walk.

Recovery run after a long run

Run it the next day and keep it to 20 to 30 minutes, or walk instead. The long run is usually the biggest load of your week, so the day after calls for the gentlest running or none at all. A marathon is different: our article on how long it takes to recover from a marathon explains why the first 3 to 7 days should be free of running.

Do Recovery Runs Actually Help You Recover?

This is the question runners argue about most online, and the evidence is fairly clear: a recovery run doesn't make your legs repair faster. No trial has tested the classic version, a short easy run the day after a hard session, against a day off. The closest studies all point the same way, though.

• A jog straight after a race made things slightly worse. Wiewelhove and colleagues (2018) assigned 46 male recreational runners who had just finished a half marathon to 15 minutes of jogging at 60 percent of their anaerobic threshold, cold water immersion, massage or passive rest. The joggers felt less recovered than the resting group, both straight afterwards and a day later. By then their creatine kinase, a blood marker of muscle damage, averaged 861 U/L against 645 U/L. None of the four methods improved the objective fatigue markers.
• Light exercise on the next two days changed nothing. In a study by Andersson and colleagues (2008), eight of 17 elite female soccer players did easy cycling at 60 percent of their peak heart rate plus light strength work 22 and 46 hours after a match. Their sprint, jump and strength recovery matched the players who rested.
• Light movement eases soreness, briefly. When Zainuddin and colleagues (2006) had 14 people gently exercise arm muscles they'd damaged with hard eccentric work, soreness fell by about 40 percent right after each session. Strength recovered no faster over the following week. That's the loosened-up feeling you get ten minutes into a recovery run, and it wears off.
• The one positive result came from a pool. In a trial by Lum and colleagues (2010), nine triathletes did a hard interval run, then 10 hours later either rested or swam 20 lengths of 100 meters at 90 percent of their 1 km time-trial speed. After the swim, they ran 14 percent longer the next day before they had to stop, 830 seconds against 728 after rest. It's one small study, and swimming spares your legs from impact.

The wider research agrees. A 2018 meta-analysis of 99 studies by Dupuy and colleagues found active recovery did far less for soreness and fatigue than massage did, and our review of the active recovery research walks through the results.

So why do runners do recovery runs?

Because easy running is where most endurance fitness comes from, and a recovery run is easy running you can fit onto a tired day. Casado and colleagues (2021) went through the training logs of 85 elite and world-class male distance runners over their first seven years of systematic training. Total distance tracked performance most closely, with a correlation of 0.75 or more. Distance in easy runs came close behind at 0.68 or more, ahead of short intervals at 0.53 and tempo runs at 0.50. A correlation can't prove the easy miles caused the faster times, but it fits the review by Haugen and colleagues: top runners build huge weekly volume by running easy, often twice a day.

For a recreational runner the payoff is smaller and more practical. A recovery run lets you run four or five days a week without adding another hard day, and it keeps your routine going on a day you might otherwise drift.

When a rest day beats a recovery run

Skip the recovery run and rest, or walk instead, when:

• You run three days a week or fewer. Your rest days already do the recovering.
• You're in your first few months of running. Your heart and lungs adapt faster than your bones and tendons, so extra running days can wait.
• Soreness is getting worse instead of better, or pain changes the way you run.
• You slept badly, you're coming down with something, or you're dreading the run.
• You've just run a marathon or an ultra.

Rest days are part of every good plan, and taking one when your body asks for it is how you keep running for years.

Why Does My Heart Rate Get So High When I Run?

If your watch says 160 on a run that's supposed to be easy, there's usually an ordinary explanation:

• Running costs more than it looks. The 2024 Adult Compendium of Physical Activities rates running at 5 mph, a 12-minute mile, at 8.5 METs, against 4.8 for brisk walking. For a newer runner, even a slow jog can be a vigorous effort.
• Heart rate drifts up as a run goes on, especially in heat and as you lose fluid. In a study by Montain and Coyle (1992), eight trained cyclists rode for two hours at 33°C while drinking different amounts. The more body water they lost, the higher their heart rate rose and the less blood their heart pumped with each beat.
• Tired legs cost more. As the downhill running study above showed, damaged muscles make the same pace more expensive, so your heart rate tends to run higher on a recovery day.
• Your sensor may be wrong. Wrist sensors sometimes lock onto your step rate and read 160 to 180 when your real heart rate is lower. A chest strap gives a steadier reading.
• Everyday factors add up. Caffeine, poor sleep, stress, illness, humidity and altitude all raise your heart rate at the same pace.

The fix is the same for all of them: slow down until you can talk, and walk when your breathing climbs. Walking a lot of your recovery run for a few weeks is normal, and your heart rate at a given pace drops as your aerobic fitness improves. A high reading that comes with chest pain, dizziness, fainting or a racing beat that doesn't settle when you stop is a reason to stop and see a doctor.

Recovery Run Alternatives: Walk, Bike, Swim or Stretch

A recovery run is one of several ways to fill the day after a hard session. If your legs or joints want a break from impact, swap in some cross training instead:

• A brisk walk of 30 to 45 minutes, with far less impact than running.
• Easy cycling for 20 to 40 minutes at a low resistance.
• A swim or pool session, the option behind the one positive result above.
• A mobility or yoga session of 15 to 20 minutes at home.

That last option is where a workout app helps. FitCraft's workouts include yoga, mobility, cardio and strength sessions with bodyweight and dumbbells, a 3D AI coach demonstrates every move, and streaks keep count of the days you show up for a session, gentle ones included. If showing up for the easy days is the part you struggle with, our roundup of the best fitness apps for staying consistent compares the apps built around that problem.

What This Means for You

A recovery run is allowed to feel almost too easy. If your easy days have crept up to the same medium effort as everything else, slowing down the day after a hard session is one of the simplest changes you can make, and it costs you nothing but a little pride.

The bigger risk is the all-or-nothing voice that says a slow run isn't real running. Listen to it and you either push every run until you're always tired, or you skip the easy days and the week falls apart. Picture a different month: one or two hard sessions a week, short slow runs or walks the day after, and a routine that keeps going because no single day asks too much. As one FitCraft user, Katie, put it: "I've tried everything. This is the first time I've stuck with something past two weeks."