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Grindelwald-Wengen, Grindelwald-First and Mürren-Schilthorn give you three different starting points for a Jungfrau ski day. Pick one sector and spend the day on runs that suit your group. Lift connections depend on what is open.
You need the ski pass for your chosen area; the sightseeing Jungfrau Travel Pass is a different product. Beginners should arrange lessons and an appropriate teaching area with a ski school. Snow and piste reports tell you what is actually open, regardless of whether winter tickets are on sale.