Activity Cards

Explore one of the most remote and rugged wilderness areas in Orange County on this advanced mountain bike ride. This program begins in Irvine Regional Park, continues to the Coal Mine, and then on to Fremont Canyon.

This 11.5-mile ride has several sustained and steep climbs and includes a 2,000-foot elevation change; it is for highly experienced, skilled, and conditioned mountain bikers only.

Bring plenty of water and nutrition.  Helmet required. This ride is 24 miles, and may take up to 4 hours to complete.

Please review the Difficulty Ratings on the brown banner above before registering. Understanding the 1-through-5 ratings system will help you evaluate your readiness to participate in this level-5 activity on the land.

Discover Limestone canyon in the Irvine Ranch Natural Landmarks on this hard and fast-paced extreme cardio hike through beautiful terrain.

You must be an experienced cardio hiker in excellent physical condition to participate in this program. There are no scheduled stops on this hike, and the pace is an “extreme” average of 15 minutes per mile in a wilderness setting.

Please review the Difficulty Ratings on the brown banner above before registering. Understanding the 1-through-5 ratings system will help you evaluate your readiness to participate in this level-5 activity on the land.

This is a Fast paced Mountain Bike Night ride for adults (with lights) and advanced trail experience who would like to join Conservancy Volunteers on an evening ride through Limestone Canyon, exploring the Shoestring which takes the ride up to Loma for some serious climbing and then to Box Springs trail to the Sinks, continuing on to Cactus and than to Loma Ridge singletrack to Rator down into Limestone Canyon.
The trail includes natural hazards like sand, tree roots, ruts, rocks, and several tough, steep hills. Experienced riders only.  PLEASE NOTE: Elevation gain is approximately 1300ft over approximately 12 miles.