### Start

The calculators are based on the theory of 'The Secret of Running'.

Enter the distance and time of a recent run.

This is the basis for the calculations.

At the tabs you see the equivalent times for other distances and other conditions (such as wind, hills, etc.).

### Distance

The table shows equivalent times for other distances.

### Age

Enter your age.

The table shows equivalent times at the optimal age (28 years).

### Weight

The table shows equivalent times

after gaining or losing 1% body weight.

### Training

As a novice runner you can improve a lot. An elite runner has limited potential for improvement.

Enter your training level.

The table shows equivalent times after optimal training.

### Endurance

Are you a sprinter or an ultrarunner?

Enter what type of runner you are.

The table shows equivalent times of an average runner and of a runner of your endurance.

### Running Economy

The table shows equivalent times at improved Running Economy.

### Hills

Enter the total altitude difference of the course (in meters).

The table shows equivalent times of a flat course.

### Wind

Enter the wind force (in Beaufort units).

The table shows equivalent times for calm weather.

Beaufort

### Course

A straight asphalt road is an ideal course.

Enter the footing of your course.

The table shows equivalent times for an ideal course.

### Temperature

Enter the temperature in degrees Celcius.

The table shows equivalent times at the optimal temperature of 8 degrees Celcius.

N.B. This applies to the marathon only!

### Shoes

The table shows possible race times for optimal racing shoes.

### VO2 max and FTP

Below you will find your equivalent VO2 max (ml O2 per kg body weight per minute) and your equivalent FTP (Functional Treshold Power in Watt/kg body weight).