You start from the train station at Dale and run to the train station at Voss. You follow the Norwegian Tourist Association's marked paths and pass all their cabins on the mountain between Dale and Voss. For a fee, you can stay and buy food at several of the cabins, but not all, but it is possible to heat water at all of them if you bring your own food. it requires some mountain experience and that you have the necessary equipment.
Link to the Norwegian Tourist Association.