Fartlek (min)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
fartlek
About this calculator
The Fartlek (min) interval calculator is a useful tool for runners looking to improve their performance and increase their endurance. This training technique combines sprints and rest periods to create a varied pace and stimulate your physical capacity.
The basic formula for calculating the Fartlek interval is: sprints × t_sprint + rest × t_desc. This means you need to know the number of sprints and rest periods you do throughout your run, as well as the duration of each sprint and rest period.
It's essential to note that Fartlek is a training technique that can be adapted to your needs and abilities. You can adjust the duration and number of sprints and rest periods over time to continue challenging yourself and improving.
Additionally, it's crucial to be careful when performing Fartlek, as it can be physically demanding. Make sure you're well-warmed up before starting, and don't overexert yourself on your sprints, as this can increase the risk of injury.
Frequently asked questions
What is Fartlek?
Fartlek is a training technique that combines sprints and rest periods to create a varied pace and stimulate your physical capacity.
How do I calculate the Fartlek interval?
The basic formula for calculating the Fartlek interval is: sprints × t_sprint + rest × t_desc. Make sure you know the number of sprints and rest periods you do throughout your run, as well as the duration of each sprint and rest period.
What are the benefits of Fartlek?
Fartlek helps to improve your performance and increase your endurance. It can also help to increase your speed and power.
Can I do Fartlek as a beginner?
Yes, it is possible to do Fartlek as a beginner. Start with shorter intervals and gradually increase the duration and number of sprints and rest periods over time.
What precautions should I take when doing Fartlek?
Make sure you're well-warmed up before starting, and don't overexert yourself on your sprints, as this can increase the risk of injury.