CitiesEventsNewsSan MarcosSan Marcos FeaturedSportsDouble Peak Challenge to return to San Marcos in SeptemberTigist LayneJuly 14, 2021July 13, 2021 July 14, 2021July 13, 202101274 SAN MARCOS – The Kaiser Permanente Double Peak Challenge is returning to San Marcos with a 10k competitive race, a 5k fun run and a...