How many miles a week should you run? A guide by goal

How many miles a week should you run: the short answer

There is no right number for everybody: it depends on your goal, experience and time. As orders of magnitude used in common training plans: to stay fit, 3 runs and 10-15 miles (15-25 km) a week is enough; for a 10K, 15-25 miles (25-40 km); for a half marathon, 20-30 miles (30-50 km); for a first marathon, plans peak at 30-40 miles (50-65 km). These are coaching reference points, not scientific thresholds.

If you are starting from scratch, forget distance and think in minutes and runs. Three runs of 20-30 minutes with a rest day in between is a great start. Below you will find tables by goal, how to split the week between easy runs, long run and quality, how to build volume without getting hurt, how much to run in race week and the signs that tell you to stop. If you are aiming at a marathon, see the 16-week marathon training plan.

How many days a week should you run

Frequency matters more than the length of any single run. Beginners need three runs a week, not on consecutive days: the body adapts on the rest days, not while running. After 2-3 months you can move to four. Five or more takes months of base, good sleep and careful load management.

As a general health reference, World Health Organization guidelines suggest adults do 150-300 minutes a week of moderate activity, or 75-150 minutes of vigorous activity. Running three times for 30 minutes, 90 minutes in all, is already a solid base you can complement with walking, cycling or strength work. If you have not started yet, follow our 6-week plan to start running.

Table: weekly mileage by goal

Staying fit: 2-3 runs, 6-15 miles (10-25 km) a week, long run 4-6 miles (6-10 km). First 5K without stopping: 3 runs, 5-9 miles (8-15 km). 10K as a beginner: 3-4 runs, 12-19 miles (20-30 km), long run 6-7 miles (10-12 km). 10K to improve: 4-5 runs, 19-28 miles (30-45 km), long run 9-10 miles (14-16 km).

Half marathon to finish: 3-4 runs, 15-25 miles (25-40 km), long run up to 10-11 miles (16-18 km). Half marathon to improve: 4-5 runs, 25-37 miles (40-60 km), long run 11-12 miles (18-20 km). Marathon to finish: 4 runs, peak of 25-37 miles (40-60 km) over 12-16 weeks, long run up to 19-20 miles (30-32 km). Marathon to improve: 5-6 runs, 37-56 miles (60-90 km). These are indicative bands: a slow runner with little time can finish on less, a fast runner often needs more.

For a concrete plan see the 8-week half marathon plan and the one for your first 10K, with mileage already split by week.

How to spread the miles through the week

A simple rule works for most recreational runners: about 80% of runs at an easy pace where you can talk, and the rest as quality. The long run should not exceed about a third of weekly volume (30-35%), otherwise it becomes a burden on the legs. At 20 miles (30 km) a week, a 6-7 mile (10-11 km) long run is the sensible maximum.

Example for 22 miles (35 km) a week over four runs: Tuesday 4 miles easy, Thursday 5 miles with intervals or pace changes, Saturday 4 miles easy, Sunday 9 miles long and very relaxed. For what to do on the quality day read our guide to running intervals and types of training and the blog on polarized vs pyramidal training. To calibrate paces use the running pace calculator.

How to increase mileage without injury

The best-known method is the 10% rule: do not raise weekly volume by more than 10% over the previous week. It is a useful convention, not a scientific law: for someone running 9 miles it is too cautious, for someone running 40 miles it may already be too much. What matters is that jumps are gradual and that load does not climb every single week without a break.

Every 3-4 weeks add a cutback week, reducing volume by 20-30%. Change one variable at a time: if you add runs, do not also raise intensity; if you lengthen the long run, keep the other runs easy. After a break (illness, holidays, injury), do not restart where you left off: begin at 60-70% of your volume and build back over two to three weeks.

Marathon and half: mileage in race week

In the final weeks you cut volume to arrive fresh, a phase called tapering. A common scheme for the marathon: reduce mileage by 20-30% three weeks out, 40-50% two weeks out and 60-70% in the final week. For the half, a cut of about 30% in the last week is enough, with one or two short runs at race pace to keep the feel.

In the last week you do not make up for missed work: no long runs or heroic tests. A few runs of 20-30 minutes, a rest day before the start and plenty of sleep. Our tapering article explains the scheme and typical mistakes. If you are still choosing a race, see the 2027 race calendar.

Running to lose weight: how many miles do you need

When people ask how much to run to lose weight, the honest answer is that it depends on many factors and no result can be promised. A useful starting point: running burns roughly 1 kcal per kg of body weight per km, so about 70 kcal per km (110 per mile) for a 70 kg person. But weight depends on the overall balance of the day, on diet and on sleep.

For a weight goal, consistency beats extreme mileage: three or four regular runs, some extra walking and adequate nutrition. If you have medical conditions or a lot of weight to lose, ask a doctor or a dietitian before raising your load.

Warning signs and when to see a professional

Step back if for more than two weeks you have pain that gets worse while running, if you limp, if you feel discomfort at rest or at night, if you are always tired and your resting heart rate is up, or if sleep gets worse. Sharp pain or swelling is not something to run through.

If the problem does not go away, see a sports doctor or a physiotherapist. To recognise the most common knee, shin and Achilles problems read our guide on preventing running injuries. To run with company and stay consistent, find group runs near you. See you on the road.