September 19. The Desafio Doñana triathlon starts at Avenida Bajo de Guia with a thrilling 90km bicycle race throughout the Cadiz Province, passing through Sanlucar de Barrameda, Jerez de la Frontera, El Puerto de Santa Maria, Rota, Chipiona and back to Sanlucar de Barrameda. Next there’s a short but challenging 1km swim across the mouth of the Guadalquivir River, against the strong currents. Once across, there’s the small matter of a 30km run along the virgin beaches of the Natural Environment of Doñana, in Huelva, reaching the finish line at Punta de Malandar. More information here. Photo: Andalucia.com.