[Jefferson Maldonado]

Que tal Iciar, complementando el comentario de Tania, explora la opción de https://meetup.com

Pudiera ser una opción interesante, aunque sea para un solo evento.

meetup.com

Meetup | Find Local Groups, Events, and Activities Near You

Find Meetup events, join groups, or start your own. Make new friends and connect with like-minded people. Meet people near you who share your interests.