Going up, you will take the "Chemin des Rognes," a recently rehabilitated trail that provides a quieter (but more technical) alternative to the classic Nid d'Aigle route. Enjoy the calm and the amazing view of the Chamonix Valley, because once you reach the Baraque des Rognes at 2800m, expect bigger crowds. At Tête Rousse, watch as climbers tackle the infamous Couloir du Goûter and enjoy the view of the surrounding peaks and glaciers. Keep following the trail on the way to Bellevue

When you're ready for the climb down, retrace your steps before taking the trail down to the Nid d'Aigle hut, where you'll have the opportunity to get closer to the Bionnassay Glacier. From there, just after a steep bit with some ladders, the trail becomes easier until Bellevue, where the final descent towards Les Houches starts.

A number of alternative routes are available; here you'll follow the old route used by the TDS trail race.