juoksijoiden
Juoksijoiden is the genitive plural form of the Finnish noun juoksija, meaning “runners.” It is used to indicate possession, association, or relation to a group of runners. For example, juoksijoiden harjoitukset refers to the training sessions of the runners, and juoksijoiden kilpailu would be a competition organized by or for the runners.
Etymology and grammar: The base juoksija is formed from juosta (“to run”) with the agent noun suffix
Usage notes: Juoksijoiden appears in sports reporting, club communications, and descriptive writing to denote a collective
See also: juoksija, juoksu, kestävyysjuoksu, list of Finnish noun inflections.