10K por la Fibrosis Quística is a 10-kilometer run in Foios, a town in Valencia. It is a fundraising race for cystic fibrosis, and the event is listed as non-competitive, so the point is participation and support rather than chasing official prizes.
The race is organized by the Foios town council and its sports department, working with the Valencian Cystic Fibrosis Association and the local sports group Gente de Foios. The series has run through multiple editions, with sources referring to both a sixth and a tenth edition, which suggests a small local event that has continued over time around the same cause.