Raramuri ultra-marathon runners: a systematic review

Ultramarathon runners, especially those from the Sierra Madre known as Raramuri had been in the interest of the scien-tific community. How does someone who does not have the right clothing and shoes, nutrition, and formal training, could travel distances of more than 100 km, but manage to be one of the best? Competing against runners who have more and better resources. Objective: to identify studies carried out with ultramarathon runners regarding their performance, their physical abilities, type of training, their culture, among others, that could identify their capacity as runners. Method: A search was carried out in the Pubmed, Dialnet, Science Research and Scopus databases. Initially, 445 documents were identified, of which 7 fulfilled whit the CASPE indica-tors for systematic reviews. Results: There are two groups of researchers which approach in research is on one hand, interested in the physiology. On the other, there are others which approach is anthropology, who emphasize the culture, customs, and traditions of the Raramuri, to relate their endurance capacity to run. Conclusions: It is considered necessary to carry out more mixed-type studies in which both physiology and their way of life are evaluated that add to the current published literature.