Canyon Sin Nombre to Pinyon Mountain Road

Canyon Sin Nombre to Pinyon Mountain Road is a challenging 34.6 mile point-to-point route that begins at Canyon Sin Nombre along Highway S2 in Anza-Borrego Desert State Park, winding through dramatic desert landscapes, narrow slot canyons, and rugged terrain. Highlights include the Diablo Dropoff, the stunning formations of Sandstone Canyon, and the chance to explore the Pinyon Mountains, with an optional side trip to bag Whale Peak. You’ll end back at S2 however, you will be further north from the start and unless you want to double the overall mileage you will need to arrange a shuttle in advance. 

DESCRIPTION
Start at the Canyon Sin Nombre trailhead along Highway S2, where a short walk along a sandy wash leads you into the entrance of Canyon Sin Nombre. 

As you move deeper into the canyon, the terrain varies between soft sand, rocky patches, and occasional dry falls. The canyon twists and turns, revealing striking geological features, including smooth walls, natural alcoves, and eroded arches.

About halfway through, you’ll reach a wider section of the canyon where you can take a break, enjoy the solitude, and soak in the quiet beauty of the desert. The route continues through Diablo Dropoff and Sandstone Canyon. You’ll Pass Split Rock, an iconic formation, and continue deeper into the Pinyon Mountains, surrounded by striking vistas and the quiet beauty of the high desert.

For those seeking an extra challenge, take a side trip to Whale Peak. This climb offers incredible panoramic views of the surrounding desert but will add distance and elevation to the overall trek. The route ends at the end of Pinyon Mountain Road.
Recommended For: Experienced backpackers seeking a remote desert adventure

FLORA AND FAUNA

• Flora: You’ll encounter creosote bushes, ocotillo, cholla, and barrel cacti along the route. Spring brings wildflowers such as desert lilies and sand verbena.

• Fauna: Wildlife sightings may include bighorn sheep, jackrabbits, lizards, and a variety of desert birds, including hawks and roadrunners.

Camping and Permits

• Camping: Dispersed camping is allowed throughout Anza-Borrego Desert State Park. Look for flat, open areas away from washes to set up camp.

• Permits: No permits are required for backpacking, but you must follow Leave No Trace principles and check for any park regulations before heading out.

SAFETY AND CONSIDERATIONS

• Water: There are no reliable water sources along the route. Carry sufficient water for the entire trip, accounting for hot and dry conditions.

• Weather: Best hiked in cooler months (fall through spring). Avoid summer due to extreme heat.

• Flash Floods: Be cautious of flash flood risks when hiking through slot canyons. Avoid the route during or after rain.

• Shuttle: Arrange transportation in advance, as the route ends further north along S2, far from the starting point.

OPTIONAL SIDE TRIP
Whale Peak: Add an optional 4–5 miles round trip with ~1,200 feet of elevation gain to summit Whale Peak. The rewarding views make this detour worthwhile for those with the time and energy.