When we got lost in the Alps ( long story involving detour signs that vanished, unmarked gravel tracks, abandoned cars at the edge of 500ft plus drops, landslide warnings, boulders the size of garden sheds in the road, snow, ice, wolves (ok, not wolves, but there could have been wolves in those forests!) and a blinking fuel light for miles) we managed 171 miles out of our 16 litre tank..................and we hadn't exactly been riding conservatively up until we got lost
You'll have to do the experiment again
