Ireland - probably Republic of Ireland, Southern Ireland, Eire.
Title: "IRISH ATHLETIC BOOM. The N.A.C.A.I. hold their annual Cross Country Rally at Inchicore".
High angled panning shot of a crowd of young athletes, some wearing masks and funny wigs, waiting to start a race - they all seem in high spirits. L/S of the start of the race - the young men run off, over a field and into the countryside.