Location: La Paz department, Bolivia Length: 50 km Duration: 3-4 days Difficulty: Moderate
From La Paz, take any bus heading towards Yungas and ask the driver to drop you at La Cumbre at the top of the pass. Expect to pay 10-15 Bs.
Route: The bus will drop you on the side of the road at the top of the pass at La Cumbre. There is a small ranger station at the trailhead and a small lake. After registering at the ranger station, go right around the lake and head up the ridge towards a cross at the summit. There is a rough road you could follow or just climb the scree slope towards the top of the ridge. From the top, you will see the Inca road descending into the valley on the far side of the ridge. This will be your trail for the next several days.
Follow the Inca road as it quickly drops towards the valley floor. At the base of the mountain there is are ruins of an Inca way station or tambu that make for an interesting stop for lunch. After 4-5 hours of hiking you will reach your first camp at Challapampa. Expect to pay a minimal camping fee. There are some snacks and drinks available for purchase.
On the second day, the trail drops ever lower in elevation with several stream crossings over suspension bridges of varying degrees of sturdiness. The trail descends for the most part until you cross the river and ascend the far side of the valley. You will pass several tiny settlements, some of which have camping facilities. After a long day of hiking we stopped at a hamlet called Buena Vista.
The third day is all down hill for 4-5 hours to the town of Chairo. Theoretically, you could follow the road all the way to Coroico but it is convenient to catch a microbus to Coroico and from there back to La Paz.