Pace calculator

Enter your pace to see finish times, or set a goal time and we’ll tell you the pace you need. Simple.

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Pick minutes and seconds for your pace

Advanced

Numbers are estimates. Listen to your body. You’ve got this.

How to use the pace calculator

Use this running pace calculator to convert between pace and finish time. Choose km or miles, then either: (1) enter your pace to see estimated finish times for common race distances, or (2) enter a distance and goal time to see the pace you need.

Modes Formulas Examples FAQ

Modes

  • I know my pace: get predicted finish times for distances like 5K, 10K, half marathon, and marathon.
  • I have a goal time: choose a distance to calculate the required pace per km and per mile.

Pace calculator formulas

Pace is time divided by distance. Finish time is pace multiplied by distance. This tool uses those relationships to compute pace, splits, and estimates for common race lengths.

Calculate pace

Pace = Time ÷ Distance

Example: 50:00 over 10 km → 5:00 /km

Calculate finish time

Time = Pace × Distance

Example: 5:00 /km for 21.0975 km → ~1:45:29

Convert km and miles

1 km = 0.621371 mi

1 mi = 1.609344 km

Use the km/mi toggle at the top.

UK pace examples

Here are three common UK targets and the pace you need. Use the calculator above to fine-tune your own goal.

Sub-20 5K pace

Distance: 5 km

Goal time: 20:00

Required pace: 4:00 /km (≈ 6:26 /mi)

Sub-90 half marathon pace

Distance: 21.0975 km

Goal time: 1:29:59

Required pace: 4:16 /km (≈ 6:52 /mi)

Sub-4 marathon pace

Distance: 42.195 km

Goal time: 3:59:59

Required pace: 5:41 /km (≈ 9:09 /mi)

Popular UK use cases: parkrun pace calculator, marathon pace calculator, and converting min/km to min/mile.

FAQ

What is a good running pace?

“Good” depends on your experience, age, and goal. A better benchmark is whether you can sustain a pace comfortably and recover well. Use this calculator to set realistic training targets and refine your pacing over time.

Can I use this as a parkrun pace calculator?

Yes. Parkrun is 5 km — enter your 5K target time to see the pace per km and per mile you’ll need, plus splits to help you pace evenly.

How do I calculate pace per mile from pace per km?

A mile is longer than a kilometre. To convert, multiply your seconds-per-km pace by 1.609344 to get seconds per mile (or use the unit toggle to switch instantly).

How do splits help on race day?

Splits show your target time at each marker (for example every 1 km or mile). Even pacing can reduce blow-ups, while a slight negative split (finishing faster than you start) is a common strategy for strong finishes.

Is this a marathon pace calculator?

Yes — select Marathon and enter your goal time to see the required pace per km and per mile, plus splits and pacing bands.

How do I convert treadmill speed to pace (km/mi)?

Use our treadmill pace calculator to convert between speed and pace, and to estimate distance and time in both km and miles.

Tip: bookmark this page and reuse it when your training pace changes.