You start from the car park in San Giacomo di Fraele 1952 m, which is situated at the end of Cancano lakes, and follow the dirt road n. 182 gently sloping down northwards. You get to Acqua Del Gallo 1925 m and find a crossroads on your right towards Switzerland, which allows you to cover the same route in the opposite direction. We instead turn left uphill to Val Bruna and then descend to Grasso di Pra' Grata 1889 m and cross the little bridge on the river 1860 m. From here on the long sideway to Livigno lake begins and above it the track becomes a narrow trail crossing the gravel steep cliffs bordering the basin: pay attention Once you have gone beyond the last small valleys, then the real switchbacked climb begins. You ride steadily uphill on the smooth path among the pine trees until you reach the wide Forcola del Gallo 2280 m and the Swiss territory at Doss del Termel 2318 m. Now begins a descent of 200 m on a very steep and bumpy trail requiring good technique and concentration. Then you get to Alp Mora 2084 m, whence the dirt road goes southeast downhill the length of the same name valley. You find a diversion to the right at 2062 meters, you turn back northwest and reach Passo di Val Mora 1934 m and San Giacomo di Fraele riding first on a wide road and then on a flat but narrow and technical trail. N.B. In case of no thoroughfare for vehicles on the stretch linking Cancano to San Giacomo di Fraele, you have to add these 8,7 km of dirt road to be ridden with your MTBs for the round trip.