It started in the eighties
In many years, we thought that the first PhotoMarathon was born in New York in 1987 - but that was not true. The PhotoMarathon concept is developed by two friends Antonio Bolivar and Eduardo Soto in Madrid in 1984. They called it Maratón Fotográfico.
On Wikipedia Antonio Bolivar has wrote "At 1984, with my friend, Eduardo Soto, we developed a photo contest that we called Maratón Fotográfico (PhotoMarathon). We offer it to Madrid council and they sponsored it with Kodak and a photo laboratory called Albacolor. We celebrate 4 consecutive editions from 1985 to 1988 with Madrid Council and Kodak, and later we did several other PhotoMaraton in Lisbon, Santiago de Compostela, etc. "