OC MTB Limestone XC Race

Saturday 8th September 2018

Augustine Staging Area: 5524 Santiago Canyon Rd., Silverado, United States

Mountain biking, Cycling


  • Mountain biking-12.3 - Individual Age group/open
  • Mountain biking-24.6 - Individual Age group/open


This race will be opened to only 200 riders.

Come join us for a thrilling mountain bike race on a scenic and fun course. The 1 lap course is 12.3 miles for High School, Beginner, and Sportsman classes and the two lap course is 24.6 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 50 minutes and there is approximately 2430 feet of ascending and descending per lap.  Cash Purse for Expert entries and 1st in age group winners will receive an OC MTB cycling jersey!  We take pride in giving you the best bang for your buck.  Post-race refreshments, overall and age group awards, and a raffle!


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.


  • Experts  – 2 Laps 24.6 miles
  • High School, Beginners, and Sport – 1 Lap
  • High School – 14-18 years
  • Beginner – 19-35, 36-49, 50+ years
  • Sport – 19-35, 36-49, 50+ years
  • Expert (Open) – Cash Purse 



Event details and schedule

Limestone Canyon Wilderness Park
Augustine Staging Area
5524 Santiago Canyon Rd.
Silverado, Ca. 92676


September 8th, 2018


Race Day Parking: 
Augustine Staging Area


Start/Finish Location: 

Augustine Staging Area


Pet Policy: 


Race Distances:
1 Lap Race: 12.3 miles (20k)
2 Lap Race: 24.6 miles (40k)


Course Information: 
Trail Description: fire roads & single track
Elevation gain: 2430ft or 4860ft
Course map: not available to post; trails available only on open access days


Turn by Turn Course Description:
12.3 and 24.6 miles: Start at Augustine Staging, out Limestone Canyon, Left on Raptor, Right on Limestone Ridge, Right on Cactus Canyon, Left on Limestone Canyon, Right on East Loma, Left on Box Springs, Left on East Loma, Right on Hicks Haul, Left on West Loma, Right on Shoestring, Right on Shoestring single track, Finish at Augustine.


Click here for larger image.


Event Time Line:
6:45 – 7:30 am – Check in
7:00-7:30am Partial Lap Practice
8:00am Race Starts – Experts, Sportsman and High school, Beginners


Race Formats: Cross Country Event

  • Multi Wave Start by category
  • Experts – 2 Laps
  • High School, Beginners, and Sport – 1 Lap
  • Expert Male and Female Purse
  • 10:30 am – Awards and raffle
  • Must be present for awards and raffle


Packet Pickup:
Friday, September 7th from 5:30pm – 7:00pm at 
Rock n Road Cyclery in Anaheim Hills
Please note: only out of town participants or 1+ hour drive is available to pick up packets on race day.

Class Categories:


  • High School – 14-18 years
  • Beginner – 19-35, 36-49, 50+ years
  • Sport – 19-35, 36-49, 50+ years
  • Expert (Open) – Cash Purse



  • High School – 14-18 years
  • Beginner – 19-35, 36-49, 50+ years
  • Sport – 19-35, 36-49, 50+ years
  • Expert (Open) – Cash Purse

Due to our contract with the Irvine Ranch Conservancy we are unable to post a map.  The website has an elevation profile and a turn by turn course description.  Limestone Canyon has Open Access Day to test the course.  Please go to this website for Open Access Dates: http://letsgooutside.org/activities/ 

Organised by


150 S. Canyon Crest Dr., Anaheim

Phone: 7148589144 x714

Event Images