The Vallecito Mountains are a mountain range in the Colorado Desert in eastern San Diego County, California. They are about 28 mi north of the Mexico–United States border.

Geography

The mountains lie in Anza-Borrego Desert State Park, in an east–west direction, southwest of the community of Ocotillo Wells, and south of Highway 78. The range is approximately 15 mi long, and reaches an elevation of 5349 ft above sea level at Whale Peak. The Laguna Mountains are to the southwest and the Volcan Mountains to the northwest, and the Pinyon Mountains and Borrego Valley are on the north side. The Sawtooth Mountains, Tierra Blanca Mountains and Jacumba Mountains ranges lie to the south and southeast.