OC MTB Races is excited to offer the mountain bike community three thrilling XC races in Orange County.  These races take place in two spectacular protected wildlands, Limestone Canyon Nature Preserve and Fremont Canyon. These rarely open lands will captivate riders with panoramic views of the Pacific Ocean, Catalina Island, Irvine Lake, and the Cleveland National Forest.  We give a large CA$H Purse for top 5 expert finishers and 1st in age group winners will receive OC MTB swag!  We take pride in giving you the best bang for your buck.  Post-race refreshments and a raffle for all!

May 4th, 2019 OC MTB Limestone XC Race 11m/21m

Come join us for a thrilling mountain bike race on a scenic and fun course. The 1 lap course is 11 miles for High School, Beginner, and Sportsman classes and the two lap course is 21 miles for Experts. It is a mix of single track and fire-road. It is a fast and smooth course with a few technical sections.  Fast lap times are around 55 minutes and there is approximately 2000 feet of ascending and descending per lap.  Cash Purse for top 5 male and female expert finishers. 1st in age group awards!  We take pride in giving you the best bang for your buck.  Post-race refreshments and a raffle for all!

Limestone Canyon offers riders the experience of seeing “original California” in its fall glory.  The course will meander under a canopy of thick oaks, alongside seasonal creeks, a year-round dripping spring and past a striking geological formation known as “the Sinks.” This pristine canyon will give riders a sense of calm solitude as they race through serene meadows and rolling hills.  Once on the ridge you will be captivated by panoramic views of the Pacific Ocean, Catalina Island, Irvine Lake, and the Cleveland National Forest.

September 7th, 2019 OC MTB Limestone XC Race 18.6m/30m

Come join us for a thrilling mountain bike race on a scenic and fun course. The 1 lap course is 18.6 miles for High School, Beginner, and Sportsman classes and the two lap course is 30 miles for Experts. It is a mix of single track and fire-road. It is a fast and smooth course with a few technical sections.  There is approximately 3782ft or 6223ft feet of ascending and descending per lap. Cash Purse for top 5 male and female expert finishers. 1st in age group awards!   We take pride in giving you the best bang for your buck.  Post-race refreshments and a raffle for all!

Limestone Canyon offers riders the experience of seeing “original California” in its fall glory.  The course will meander under a canopy of thick oaks, alongside seasonal creeks, a year-round dripping spring and past a striking geological formation known as “the Sinks.” This pristine canyon will give riders a sense of calm solitude as they race through serene meadows and rolling hills.  Once on the ridge you will be captivated by panoramic views of the Pacific Ocean, Catalina Island, Irvine Lake, and the Cleveland National Forest.

October 5th, 2019 OC MTB Fremont XC Race 17m

Come join us for a thrilling mountain bike race on a scenic and fun course. The 1 lap course is 17 miles on a fire-road. It is a fast and smooth course with steep inclines and descents. There is approximately 3805 feet of ascending and descending. This course is designed for the experienced mountain biker. Cash Purse for top 5 male and female expert finishers. 1st in age group awards!  We take pride in giving you the best bang for your buck.  Post-race refreshments and a raffle for all!

Fremont Canyon Nature Preserve, in all its beauty, is situated in the Santa Ana Mountains of Orange County. Fremont Canyon is often referred to by some as “the Yosemite of Orange County,” because of its picturesque granite rock formations, caves, ridgelines, and steep canyon walls. The peak of Fremont, situated at 2,376 ft., one can take in the breathtaking views of the snow-covered San Gabriel Mountains and as far north as Los Angeles and Palos Verdes. The one loop course offering 3805 feet of elevation gain and loss, will take you past many varieties of endangered plants, including coastal sage scrub, chaparral, oak woodlands, and the rare Tecate cypress. This diverse habitat of Fremont teems with wildlife, including cactus wrens, bats, Granite Spiny lizards, San Diego mountain king snakes, Bell’s sage sparrows, rock wrens, mountains lions, mule deer and golden eagles.

OC MTB Races works as a partner with OC Parks and the Irvine Ranch Conservancy. We encourage our mountain bikers to contribute time to the land by volunteering for activities with OC Parks and The Irvine Ranch Conservancy. We also encourage our riders to adhere to all trail safety rules. Pre-riding the course is not allowed unless it occurs on wilderness access days or docent-led activities.  Pre-riding the course may jeopardize our ability to offer these events. 

We invite you to join our mountain bike races and discover the unique land in which we live, work, and play!