• May 17, 2026 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, By Mckayla O'Conner