How many miles a week should I run?

Ask ten runners how many miles they run a week and you'll hear ten different numbers, anywhere from 6 to 60. If your own number is near the bottom, it's easy to feel like your week doesn't count.

It does. How far to run depends on why you run, how long you've been running and how quickly you add more. For health, a surprisingly small amount does most of the work. For racing, more miles help, but only if you build them slowly enough that your legs keep up.

Below are the weekly ranges by goal and level, what the research says about running volume and a longer life, why injuries follow jumps rather than totals, how to raise your mileage safely and the signs you've overdone it.

Weekly Running Mileage by Goal and Level

Use the new-runner column for your first year or so of regular running, and the experienced column once you've run consistently for a year or more. Half marathon and marathon figures are peak weeks inside a training block, not what you run all year.

These are coaching ranges, not cutoffs from a trial. Nobody has randomized runners to 12 versus 18 miles a week and waited for their race times. They're the volumes that most recreational runners can absorb and that cover the distance they're training for.

If you track time instead of distance, multiply by your pace. At 10 to 12 minutes per mile, 10 miles a week is about 100 to 120 minutes of running. Time is often the easier measure for new runners, whose pace changes from week to week.

How Many Miles Should I Run a Day?

Divide your weekly target by the number of days you run. For most recreational runners that gives runs of 2 to 6 miles, with one longer run that makes up a quarter to a third of the week. A first half marathon or marathon plan pushes the long run toward the top of that share, because the long run is where race-specific endurance comes from.

• Health, 3 runs: 2 to 3 miles each, about 6 to 9 miles a week.
• 10K, 4 runs: three runs of 3 to 4 miles and a long run of 5 to 6 miles, about 14 to 18 miles a week.
• Marathon peak, 5 runs: four runs of 5 to 8 miles and a long run of 16 to 20 miles, about 40 to 50 miles a week.

There's no daily minimum. A short run counts, and so does a day off.

How Many Miles a Week Do You Need for Health?

Fewer than most runners assume. The US physical activity guidelines, summarized by Piercy and colleagues (2018) in JAMA, ask adults for 75 to 150 minutes a week of vigorous activity or 150 to 300 minutes of moderate activity. Running counts as vigorous for most people. At 10 to 12 minutes per mile, 75 minutes is roughly 6 to 7.5 miles a week.

The mortality data suggest even less does a lot. Lee and colleagues (2014) followed 55,137 adults for an average of 15 years. Runners had a 30% lower risk of death from any cause and a 45% lower risk of death from cardiovascular disease than non-runners, which worked out to about three extra years of life. The benefit was similar across every level of running time, distance, frequency and speed. Running less than 6 miles a week, less than 51 minutes a week or only once or twice a week was enough to lower the risk compared with not running.

So for health, 5 to 10 miles a week covers it. Going up to 15 or 20 is fine if you enjoy it, and the reason to do so is fitness or fun rather than a longer life.

Is 10 Miles a Week Good?

Yes. Ten miles a week is about 100 to 120 minutes of running at an easy pace, which more than covers the guidelines' vigorous minimum and is well past the under-6-miles level linked with lower mortality in the Lee study. It's enough to finish a 5K comfortably and a reasonable base to start training for a 10K.

One finding from injury research is worth knowing. In the Garmin-RUNSAFE study, Abrahamson and colleagues (2025) followed 7,391 adult runners for 18 months through their watch data and weekly questionnaires. Runners who reported less than 25 km (about 15.5 miles) a week were more likely to be injured by the time they'd covered 1,000 km than runners who ran more. That compares runners over the same distance, not the same number of weeks, and the runners whose bodies tolerate high mileage are the ones who keep running it. It doesn't make 10 miles a week risky. It does suggest that steady, regular running builds tolerance, while occasional bursts don't.

Does Running More Miles a Week Help You Live Longer?

Not clearly, past a modest amount. A meta-analysis by Pedisic and colleagues (2020) pooled 14 studies from six cohorts with 232,149 people. Running was linked with a 27% lower risk of death from any cause, 30% lower from cardiovascular disease and 23% lower from cancer. The analysis found no significant trend toward more benefit with more runs a week, longer runs, faster pace or greater total volume. The authors concluded that any amount of running, even once a week, beats none.

One study went further and suggested that a lot of running might cancel the benefit. In the Copenhagen City Heart Study, Schnohr and colleagues (2015) followed 1,098 healthy joggers and 3,950 healthy non-joggers. Light joggers had the lowest mortality, with a hazard ratio of 0.22 against sedentary non-joggers. Strenuous joggers had a hazard ratio of 1.97, but the confidence interval ran from 0.48 to 8.14. The strenuous group was small, with very few deaths, so the result can't show harm any more than it can show benefit.

A review by Lee and colleagues (2017) summed up the field: runners have a 25 to 40% lower risk of premature death and live about three years longer than non-runners, and whether the benefit shrinks at very high doses is still an open question. The practical reading is simple. Beyond roughly 10 to 20 miles a week, extra miles buy fitness and race performance. They don't clearly buy extra years, and there's no good evidence that they cost you any.

How Many Miles a Week to Train for a 5K, 10K, Half Marathon or Marathon

For racing, volume matters more. Doherty and colleagues (2020) pooled 85 studies covering 137 groups of marathon runners. Higher average weekly distance, more runs a week, a longer longest run and more hours of running each went with faster marathon finish times. The longer the race, the more your weekly mileage shapes the result.

• 5K and 10K: these races are mostly aerobic but short, so 10 to 25 miles a week with one faster session covers most recreational goals. Newer runners can finish either on the low end of the table.
• Half marathon: a first half usually peaks around 20 to 30 miles a week built around a long run of 10 to 11 miles. Our half marathon training plan lays out those weeks, including the cutback weeks.
• Marathon: start a marathon block already running 15 to 20 miles a week, then peak somewhere between 30 and 50. Our guide on how to train for a marathon covers the full build.

Injury Risk: Why Jumps Matter More Than Total Mileage

Running injuries are common, and they're most common early. A meta-analysis by Videbaek and colleagues (2015) found 17.8 injuries per 1,000 hours of running in novice runners against 7.7 in recreational runners. In the Garmin-RUNSAFE cohort, 57.8% of runners had picked up a running-related injury by the time they'd covered 1,000 km.

What predicts those injuries? Not mileage on its own, as the Garmin-RUNSAFE finding above shows. The better candidate is change: how much more you run than your body is used to.

• Weekly jumps. Nielsen and colleagues (2014) tracked 874 novice runners with GPS watches for a year. Overall injury rates didn't differ by how fast people added weekly distance. For a subset of distance-related injuries, such as runner's knee and shin splints, runners who added more than 30% over two weeks had a 59% higher rate, though the confidence interval (0.96 to 2.66) just crossed the line of no effect.
• Single long runs. Frandsen and colleagues (2025) compared three ways of measuring a spike in 5,205 runners. The clearest signal came from single sessions. A run 10 to 30% longer than the longest of the previous 30 days carried a 64% higher overuse injury rate, and one more than twice as long carried 2.28 times the rate. A one-week total compared with the previous three weeks, the acute to chronic workload ratio, showed no harmful pattern, and the simple week-to-week ratio showed no relationship at all.

Put together, the research points away from fixating on your weekly total and toward watching how fast any part of your running grows, especially your longest run.

How to Build Your Weekly Mileage Safely

1. Start from your real average. Use what you've run over the last three or four weeks, not your best week.
2. Add a little to one or two runs. About a mile per run, or roughly 10% of the week, is a sensible ceiling. Treat the 10% figure as a guide, not as a proven threshold.
3. Hold each new level for two or three weeks before you add more, so your tendons and bones catch up with your heart and lungs.
4. Cut back every third or fourth week by about a quarter, then resume from where you were before the cutback.
5. Grow the long run carefully. Keep it within about 10% of the longest run you've done in the past month.
6. Keep most miles easy. Around 80% of your running should feel conversational, with the rest harder.
7. Lift twice a week. Short bodyweight and dumbbell sessions for the hips, thighs and calves help your legs absorb the extra miles.

Adding days and adding distance are two ways to raise mileage, and doing both in the same week is the classic mistake. How many days to spread your miles over is its own question. Our guide on how often you should run covers frequency, rest days and running alongside lifting. If you're wondering whether it's okay to run every day, our look at whether running every day is bad covers that research. In short, daily running at modest mileage suits adapted runners, while newer runners do better with rest days between runs.

Signs You're Running Too Much

The ECSS and ACSM consensus statement on overtraining by Meeusen and colleagues (2013) describes a continuum from normal, productive fatigue to overreaching that takes weeks to clear. No single test catches it, so watch for a cluster of signs:

• Pain that changes how you run or gets worse as the run goes on.
• Pain you can point to on a bone, especially the shin, foot or hip. That can be a bone stress injury and needs a doctor, not more miles.
• Easy runs that feel harder at the same pace for more than a week or two.
• A morning resting heart rate that stays several beats above your usual for days.
• Poor sleep, low mood, irritability or a lost appetite that line up with a rise in mileage.
• Frequent colds or a lingering sense of being run down.
• A missed or irregular period, which can signal that you're not eating enough for your training.

If two or three of these show up together, drop your mileage by a third to a half for a week or two and see a doctor if things don't improve. Our deeper guide on when running becomes too much covers the injury, overtraining and exercise-addiction sides of the question.

What This Means for You

Pick the row of the table that matches your goal and start at the low end of the column for your level. If your goal is health, 5 to 10 miles a week spread over two or three easy runs does most of the work. If you're training for a race, build toward the range over months, hold each step for a couple of weeks and cut back every third or fourth week.

The runners who reach high mileage safely are rarely the ones who pushed hardest. They're the ones who kept running, week after week, until bigger weeks felt normal. Two short strength sessions a week support that. FitCraft's strength workouts use bodyweight and dumbbells, an AI coach demonstrates each exercise on an interactive 3D model, and streaks and leaderboards reward the steady weeks that mileage depends on. If consistency is the hard part for you, a workout app that keeps you motivated can carry the strength side while you build the miles.