Running Pace Calculator

Quickly convert pace, time, and distance, compare race equivalents, and get conservative training pace ranges.

Units: km miles

Time & pace

Mode

I have time I have pace

Distance

5K 10K Half Marathon Marathon Custom

Time (hh:mm:ss)

Results

Required pace

Speed

Split (1 km)

Input time

Using distance: 5K · Units: km · Pace: -

Distance	Time

Pace (mm:ss /km)

Predict equivalent race times from a known race performance.

Known race

Known race time (hh:mm:ss)

Estimates vary by runner; use as a rough guide.

Set a goal race and time to see suggested training pace ranges.

Goal race

Goal race time

Based on your goal time

Enter a goal time to see suggested training paces.

How do I calculate pace?

Pace is total time divided by distance. Example: 30:00 over 5K is 6:00 per km.

What pace for a 4-hour marathon?

A 4:00:00 marathon is about 5:41 per km or 9:09 per mile.

How to convert min/km to min/mile?

Multiply min/km pace by 1.609 to get min/mile pace.

What is a good 5K time?

It depends on your level. Use your own history and consistency rather than generic targets.

How accurate are race predictors?

They are rough estimates and assume similar endurance at both distances.

How to set a running goal time?

Use a recent race time and choose a realistic step forward, not a huge jump.

Should beginners train by pace?

Beginners should prioritize easy effort and consistency, then use pace as a secondary guide.

Can I use this for miles and km?

Yes, switch units at the top and all calculations update consistently.