the tour of the ecrins national park gr54 great t fitness level, and how many rest days you take to explore the stunning scenery along the route. What are some must-see highlights along the GR54 route in Ecrins National Park? Key highlights include the breathtaking glaciers of the Glacier Blanc, the panoramic views from the Col de Vars, M Mckayla O'Conner May 17, 2026