OC MTB Races is excited to announce a new mountain bike race in Orange County.  In partnership with OC Parks we are able to fulfill the wishes of this spectacular destination, Limestone Canyon Nature Preserve, to the Mountain bike community.  Limestone Canyon offers riders the experience of seeing “original California” in its glory.  The course will meander under a canopy of thick oaks, alongside seasonal creeks, and past a striking geological formation known as “the Sinks.”  Once on the ridge, riders will be captivated by the panoramic views of the Pacific Ocean, Catalina Island, Irvine Lake, and the Cleveland National Forest.

We encourage all Mountain bike riders to respect the land they are using.

These special, protected wildlands, known collectively as the Irvine Ranch Open Space, are operated by OC Parks, with public programs and activities available through the Irvine Ranch Conservancy.

Based on the geological and ecological significance, nearly 40,000 acres of open space on the historic Irvine Ranch, including the 20,000 of the Irvine Ranch Open Space, have been designated a Natural Landmark by both the State of California and the U.S. Department of the Interior. This honor recognizes the exceptional value of these lands to California and the entire nation.

Recreation opportunities are available through regularly scheduled programs. These activities include hiking, mountain biking, equestrian rides, naturalist-guided tours and self-guided wilderness access days. Other uses are prohibited by the terms of the deed restrictions, conservation easements, County wilderness park designations, and the Orange County Central Coastal Natural Community Conservation Plan permit.

We invite you to visit letsgooutside.org and select from the many free activities offered. In addition to a variety of recreational programs, there are opportunities to participate in scientific research, stewardship and other volunteer activities.