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10K guide: choosing a race and running your best 10 kilometres

Ten kilometres is 6.2 miles. It is the most widely raced distance in the UK after the 5K, and it suits almost everyone: far enough to be a real challenge for a newer runner, and short enough for an experienced one to race hard.

Who the 10K suits

If you can run a 5K comfortably, you can be ready for a 10K in six to eight weeks. The training does not take over your life. Three runs a week is enough to finish well, and four will help you run it faster.

It is also a useful stepping stone. A 10K tells you a good deal about your fitness without needing a week of recovery, and a recent 10K time is one of the best predictors of what you could run over a half marathon.

What is a typical time?

Finish times in a mass-participation 10K are spread widely. The front of the field finishes in a little over 30 minutes, the middle of the pack comes in at around 55 to 65 minutes, and plenty of people take 75 minutes or more by mixing running and walking. All of them have covered the same distance. For a breakdown by age and sex, see what is a good finish time.

Choosing a 10K

There are 10K races most weekends of the year, so you can afford to be choosy. When you browse events, look at:

  • Surface. Road races are the quickest. Trail and multi-terrain races are slower, softer underfoot and may need shoes with more grip.
  • Profile. One hill in a 10K makes a noticeable difference to your time. If you want a personal best, look for a course described as flat, and check the elevation figure if one is given.
  • Laps. Some courses are two or three laps of a park. Laps are good for supporters and for pacing, though the course can become crowded once the leaders start to overtake.
  • Field size. A few hundred runners means a clear road. Several thousand means atmosphere, and a slower first kilometre.
  • Timing. Most races use chip timing, which records your own time from start line to finish line. Our guide to chip time and gun time explains the difference.

Training for the distance

A balanced 10K week has three ingredients:

  • A longer run. Build this to 6 to 8 miles (10 to 13 kilometres) at an easy pace. Running further than race distance in training makes race day feel manageable.
  • A faster session. Intervals such as five repetitions of one kilometre at your target pace, with two minutes of gentle jogging between, teach your body what race pace feels like.
  • An easy run. Thirty to forty minutes at a conversational pace. This builds fitness without adding fatigue.

Keep the easy runs easy. Running every session at a moderately hard effort is the usual reason progress stalls. The 10K training plan gives a week-by-week schedule for both first-timers and runners chasing a time.

How to pace a 10K

A 10K is run at an effort you could describe as comfortably hard. You should be able to speak a few words, but not hold a conversation. Aim for even pacing: the second half should take about the same time as the first.

  1. Kilometres 1 and 2: hold back. Adrenaline makes target pace feel easy at this stage, so check your watch.
  2. Kilometres 3 to 7: lock into your rhythm. Concentrate on relaxed shoulders and steady breathing.
  3. Kilometres 8 to 10: this is where it gets hard. Pick a runner ahead and work towards them, then choose another.

Use the pace calculator to turn a target time into a pace per kilometre or per mile, and the pace chart to see split times at a glance.

Race day basics

You do not need to carry food or drink for a 10K in normal conditions. Have breakfast two to three hours before the start and a drink of water in the hour before. If there is a water station at halfway, a mouthful is enough.

Warm up for ten minutes with a gentle jog and a few short, faster strides. A 10K starts quickly, and it is easier on the body if your heart rate is already raised. For everything else, from safety pins to spare layers, run through the race day checklist the night before.

What next?

After a 10K you have options. You can enter another and try to run it faster, drop down to sharpen your 5K, or step up to the half marathon. Give yourself two or three easy days first, then decide while the race is still fresh in your mind.