The La Paz Marathon is an effort to keep the flame of the marathon alive in the capital of Bolivia.
The city of La Paz, recently called City of Heaven, has a very special topography. It is built in a valley, has therefore very few flat streets and almost all of them are important. The design of the route goes along the slopes of this valley. 42.2 km are within a rugged topography and also a route that has minimal vehicular traffic.
The marathon starts at 3370m and finishes at 3280m, but has to pass highest points of 3950 and 3930 meters, with a total descent of 1390 meters.
It is basically a self supported race. The route is marked with stickers and paint but it is not closed to traffic. You can also download a GPS map from the official website. At certain points there are manned checkpoints.
There is no assistance from city authorities but police forces are helpful.