The Tercera División Grupo 1 is one of the regional divisions of the Tercera División, Spain's fourth football division. It is the first Galician division and the Tercera División Grupo 1 is in this respect under the Segunda División B and above the Preferred Autonómica Galicia which consists of a Northern and a Southern group. Set up
There are 19 clubs that compete in a league. Numbers 1 to 4 play playoffs in one place in the Segunda División B. Numbers 17, 18 and 19 descend to the Preferred.
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