Fitness and training

Half Marathon Pace Calculator

Find the mile pace for a half marathon goal time, from debut 13.1 attempts to PB hunts.

Fitness Reviewed Runs in your browser

Your details

Enter your goal finish time. We turn it into even pace per mile.

Half marathon goal finish time

Enter the finish time you want. We convert it to even pace per mile and per kilometre.

What is this calculator?

Find the mile pace for a half marathon goal time, from debut 13.1 attempts to PB hunts.

How it works

Common questions

What is the half marathon pace?

It turns the numbers you type into a half marathon pace figure you can read in one sitting. Use it as a guide, not a diagnosis.

Is sub-two hours realistic?

That is about 9:09 per mile. Some runners get there with steady training; others need a longer build. Be honest about current long-run pace.

Should race pace match every training run?

No. Most miles should be easier. Save goal pace for specific sessions.

Can I include walk breaks?

Yes. Plan average pace including walks so the finish time still stacks up.

Example scenarios

Meera, debut 13.1

2:15:00

About 10:18 per mile.

Trevor, sub-two aim

1:59:00

About 9:05 per mile.

Aoife, steady build

1:50:00

About 8:23 per mile.

Understanding your results

Finish time divided by 13.1 miles. The second half is usually slower than the sheet. Fuel and shoes still matter more than a second.

Fitness Reviewed

About this result

Guidance only. Calculations run in your browser. Numbers are estimates, not a diagnosis.

How we calculate

Finish time divided by 13.1094 miles.

Sources

Method described on this page. We link NHS or GOV.UK guidance where it applies.

Limitations

  • Nutrition and pacing matter more as distance grows.
  • Build weekly mileage gradually.

When to seek help

Stop and seek medical help for chest pain, severe breathlessness or dizziness while training.

Spotted an error? Request a correction or read our editorial policy.