XVIII Trobada de Bolilleres, Burriana (Plana Baixa, Castelló, Valencian Community)
Organizers: Asociación de Bolilleras Mig Punt
la Regidoria d’Igualtat, Ajuntament de Burriana
Date: Sunday, February 8, 2015
Time: Starts at 10:00
Place: la Llar Fallera de Burriana
(I think this is a convention center)
Information:  Ajuntament de Burriana, 9654510062/656122526, info@burriana.es
Post on the 2014 event:  http://tinyurl.com/khoplbx

This event typically draws about 900 lacemakers from 25 localities, and over 2,000 visitors. It is one of the scheduled 25 events in the annual Festival of Sant Blai, the patron saint of Burriana. The festival runs from February 1st to the 15th, 2015.
Rather difficult to find information on this event, even though it is so large.