San Pedro de Atacama to Susques via Paso Jama

San Pedro de Atacama (Chile) – Portezuelo Paranal – Paso Jama – Susques (Arg)

This route from San Pedro de Atacama to Susques is the main highway between northern Chile and Argentina and is an easier (and we believe less interesting) option than the unpaved alternative to the south via the Paso Sico. Going west-east as described here, the majority of the climbing is done right at the beginning on the dull climb out of San Pedro which takes a day or more. After that there isn’t a huge deal of climbing to do and you’re likely to get some nice tailwinds as the prevailing winds are from the west/northwest. If you cycle this in the opposite direction the wind will probably be a menace, but you won’t forget the 2,000m+ descent to San Pedro for a while. 10% gradients and few corners – check your brakes before you take the plunge…

The scenery is excellent for much of the route, especially the section between the turn-off to Hito Cajon and the Chile/Argentina border. Water can only be found at a couple of places on the road and basic food can be bought only at the Pueblo de Jama, so it’s a good idea to take all food you need with you from San Pedro (or Susques if you are going in the opposite direction). We were passed by over 100 vehicles each day of this cycle, so you should be able to get help if you get into any difficulties. Note that if you leave San Pedro unacclimatized you may have issues with the altitude as the road climbs straight up to 4,800m and stays over 4,500m for about 60kms.

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Licancabur and Juriques
Getting water from a bofedal
Portezuelo Paranal
Descent from Portezuelo Paranal
Paso Jama
Paso Jama

Total dist. Stage dist. Description
0km San Pedro de Atacama (2,440m). Tourist town with all facilities, but no money in the ATMs on Sundays.
57.7km After 1.4kms pass the Chilean immigration office. As of 2013, you do not do immigration formalities here if you are crossing Paso Jama – they are now done at the border. The office is for people heading over Paso Sico, or Hito Cajon. Then turn uphill for a gentle 12.3kms climb to 2,530m. Climb steeply for the next 32kms to the turn-off to Hito Cajon (4,665m) and the Bolivian Lagunas. Staying on the tarmac the climb eases for 12kms to the Portezuelo de Suco.
57.7km Portezuelo de Suco (4,825m – GPS01).
42.7km Descend and in 23kms come to a rest area (all the rest areas have walls where you could put up a tent and get protection from the wind) by a bofedal (marsh). Just after the rest area a stream (drinkable after treating it) which leads out of the bofedal runs alongside the road – this is the only water between San Pedro and the Pueblo de Jama. The road is flat for about 11kms, then climbs for 9kms to the Portezuelo Paranal.
100.4km Portezuelo Paranal (4,836m – GPS02). The highest point on this route.
66.3km Descend for 14.6kms to a rest area by a salar. There is another rest area (4,240m) 22.6kms further on. From here it’s a gentle and easy 11.1km climb to a high point (4,410m), then 13kms to the border (4,290m) and a 5km descent to immigration at the Pueblo de Jama.
166.7km Argentine and Chilean immigration and Pueblo de Jama (4,100m). Possible to get very basic supplies, and water. There are also good free showers at the YPF, as well as WiFi, and there is also a motel.
50.8km Flat to Archibarca. Road is heading south-ish so sidewinds likely.
217.5km Archibarca – only a few houses, but they were inhabited and there was water. There is a road to Catua from here, so if you fancy heading there and the road over the Paso Sico, turn right.
67.4km Staying straight, in 8.8kms reach the junction with Ruta 70. In a further 27.5kms you are at a low point (3,910m) before a 10.9km climb to the Abra de Taire (4,110m). A 17km descent brings you to a service station (water, food) at the junction to Sey (turn R), but if you stay straight, on the tarmac, it is only 3.2kms to Susques.
284.9km Susques (3,630m). Scruffy little town with ATM, accommodation, restaurants, shops but no bike shop. There is an internet place but it didn’t work when we were there.
Time taken – 3 ½ days and amount climbed – 3,650m 10 hours: San Pedro – Port. Paranal (2,860m climb, tailwind).
3 hours: Port. Paranal – Pueblo de Jama (400m climb, tailwind).
6 hours: Pueblo de Jama – Susques (390m climb).
Traffic 121 vehicles our first day (we were so bored on the climb that we counted), and 100+ vehicles the other 2 days.
When we cycled Early December 2010.
Difficulty 3
How much we had to push on this route Not at all

GPS Point Description Lat/Long/Altitude
GPS01 Portezuelo Suco 22.9250 S, 67.7030 W, 4,825m.
GPS02 Portezuelo Paranal 23.0725 S, 67.5047 W, 4,836m.


View San Pedro de Atacama – Susques in a larger map
Nearby routes:               Susques to Salar de Pocitos                 Paso Sico                 Sur Lipez Lagunas

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