Itinerary : Starting from Grenoble's station, reach the Pierre Sémard street passing under the railway. From there, you can rejoin the Drac bridge, taking the René Thomas street by the Square des Fusillés. Go through the Drac bridge, then take the « A » tramway platform up to the Cours Jean Jaurès. Go on along the Balmes alley and pass under the boulevard Paul Langevin. Karl Marx Park will be on your left.