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5K guide: from first run to a faster 5 kilometres

Five kilometres is 3.1 miles. It is the distance where most people start running, and the one many experienced runners keep coming back to, because it is quick to train for and honest about your fitness.

Starting from nothing

You do not need to be able to run for half an hour to begin. Most beginner programmes alternate short spells of running with walking, and lengthen the running a little each week. Nine or ten weeks of three sessions a week is enough to take most people from no running at all to 30 minutes without stopping. Our couch to 5K plan sets out each session.

Three things make the early weeks easier:

  • Slow down. Almost every beginner runs too fast. You should be able to talk in full sentences. If you cannot, ease off.
  • Rest between runs. Leave a day between sessions so your legs can adapt.
  • Repeat a week if you need to. There is no deadline. Repeating a week is better than skipping ahead and giving up.

See a GP before starting if you have a health condition.

Where to run a 5K

There are more opportunities to run a timed 5K than any other distance. Free weekly timed 5K events such as parkrun take place in parks across the UK on Saturday mornings. They are open to all abilities, including walkers, and are a relaxed way to run with others and get an accurate time.

There are also organised 5K races on roads, in parks and on trails, including charity runs, evening series and events run alongside longer races. A race gives you a bib number, a measured course and usually a medal. You can browse events to see what is coming up.

What is a typical time?

A new runner will usually finish a first 5K in 30 to 40 minutes. A regular club runner might run 20 to 25 minutes, and the fastest finishers at a local event are often around 16 to 18 minutes. Time is only one measure. Running the full distance without walking is a real milestone on its own. There is more on this in what is a good finish time.

Getting faster

Once you can run 5K comfortably, the quickest gains come from running a little more, not from running harder. Adding a fourth weekly run, or stretching one run to 45 or 50 minutes, builds the endurance that lets you hold a faster pace.

After a month or two of consistent running, add one faster session a week. Good 5K sessions include:

  • Short intervals: six to eight repetitions of 400 metres at a little quicker than your 5K pace, with a slow 90 second jog between each.
  • Kilometre repetitions: four or five repetitions of one kilometre at target 5K pace, with two to three minutes of recovery.
  • Tempo run: 15 to 20 minutes at a steady, controlled effort, a little slower than race pace.
  • Hill repetitions: eight runs of 45 to 60 seconds up a moderate hill, walking or jogging back down.

Do one of these a week, not all of them, and keep your other runs easy. The training plans page has schedules for every distance.

Pacing a 5K

A 5K is short enough that a fast start is tempting and long enough that you will pay for it. Going out ten seconds per kilometre too quickly often costs far more than that in the final kilometre.

  1. First kilometre: controlled. It should feel a little too comfortable.
  2. Kilometres 2 to 4: hold your pace. The third and fourth are the hardest to keep honest, so concentrate there.
  3. Final kilometre: give what you have left, and lift the pace in the last 200 metres.

The pace calculator will convert a target time into the pace per kilometre or mile you need to hold. A 30 minute 5K, for example, is six minutes per kilometre, or about 9 minutes 39 seconds per mile.

What you need

Very little. A pair of running shoes that fit well matters most, and the running shoes guide explains what to look for. Beyond that, wear comfortable clothing that does not rub and that suits the weather. You do not need to carry water or food for a 5K, and you do not need a watch to start with.

Moving up

When 5K feels routine, the 10K is the natural next step. If you can run 5K three times a week, six to eight weeks of gradual building will get you there.