La Media San Fermín is a 21 km race held in Pamplona, Navarra's capital, coinciding with the San Fermín festival. It is designated as non-competitive, emphasizing completion of the half-marathon distance over achieving top positions. The event takes place during Pamplona’s main festival period, when the city is alive with San Fermín symbols, visitors, and local customs.
The race name originates from San Fermín, a legendary Hispanic martyr traditionally associated with Pamplona and Amiens, where he is the first bishop. Historical documentation is scarce; there is no concrete evidence of him serving as bishop of Pamplona, and the legend surrounding him developed centuries later. This blend of sport, local reverence, and festival spirit creates a distinctly Pamplona setting, although the available race details offer limited information about the specific course beyond its 21 km length.