For the serious MTB afficionado, there is at present about 10km (6mi) of technical singletrack trails within the Potrero. There is also an open, very dry, badlands-type area to the northwest or Rancho Cerro Gordo that's easily accessible via a 20-minute ride on rough roads. This latter offers an almost limitless collection of drop-offs, traverses, canyon runs, etc. These features are ready to ride in their natural state, and are connected by a network of passable goat trails.

The Potrero trails were built and/or are maintained with considerable effort by a small but very dedicated and friendly group of local MTB enthusiasts who would love to share their trails with the outside world (see Local Contacts).

It's been a bit of a struggle, since the terrain is by and large very rocky and loose, and the occasional but powerful downbursts of rain the region experiences from time to time can completely destroy what took many days of effort to build. But it is exactly this rough edge that gives the Potrero trails their unique character and technical appeal: be prepared for a thorough shakedown and look out for that stubborn boulder in the trail, which will throw you over your handlebars, and into a cactus. See how fast you dare to go bouncing down the rock outcrops and surfing bars of rough gravel. We guarantee that by the end of your stay, your technique and reflexes will have markedly improved. And yes, some will even find a kind of perverse enjoyment in this. The locals sure do!