Simplified itinerary from Luxembourg City: – follow PC 1 and PC 13 to Garnich, – follow PC 12 to Hagen and Steinfort, stay and follow PC 12 (EuroVelo 5) to PC 17 in Noerdange, – follow PC 17 to Koetchette (EuroVelo 5), and jump on PC 18 to Martelange, – continue following EuroVelo 5 signs until cycling directions are provided to Bastogne; note that many parts are unpaved between Martelange and Bastogne, – continue on the cycleways to Wiltz
Note that my map doesn’t follow this way to Steinfort as I stopped in my office.