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![Effort index Effort index](https://www.ivie.es/wp-content/uploads/2017/07/running-corredor_correr_indice_medir_esfuerzo_carrera_maraton.jpeg)
The Trinidad Alfonso Foundation and the Ivie have designed a new tool that measures the physical effort of runners and helps them achieve better marks in long-distance races. The effort index has been obtained with the collaboration of a large number of participants in Valencia’s marathons and half-marathons. With the help of a series of variables such as the age of the person and the distance run, the app calculates a runners’ individual effort during a race or training session.
This effort calculation tool is available free of charge on the Effort Index website.