How much faster could you run?

Enter your stats, then drag the weight slider to see estimated 5K to marathon times.

Your stats

Biological sex

Only used for pace limits and body-fat warnings.

Height (cm)

Weight (kg)

Body fat % (optional)

Threshold pace (min/km)

Custom race distance (km) (optional)

Advanced assumptions

Pace gain (s/km per kg lost)

Lowest BMI to show

Never below 18.5, the underweight threshold.

Still needed: sex, height, weight, and threshold pace.