The activities below are offered by a variety of organizations and their dedicated volunteers. All programs are FREE unless noted below. Programs led by IRC-Certified Volunteers require pre-registration, which closes at 4 p.m. on the day prior to the event. No walk-up registrations will be permitted for these events. For policies of other organizations, please use the sign-up information provided. For mobility device policies click here.
| Note: Minors must be accompanied by a parent or guardian for these events. For programs requiring online registration, each adult and child must be registered. |
Need help? For the fastest answers, look for organization-specific contact information in each event listing (click More Information for full listing). If no contact information is listed, email info@irconservancy.org for assistance.
Click here to learn more about IRC-Certified Volunteers. • Click here to learn more about the Difficulty Ratings.
Search & Filter Activities
Saturday, April 27, 2024
Advanced Cardio Hike: Limestone
Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Limestone Canyon, part of OCParks’ Irvine Ranch Open Space. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings. This is an 8 mile cardio hike, completed in 2.5+ hours, includes a 1000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents. This hike is much faster than a regular walking hike. We average four (4) miles per hour fast-paced and is extremely difficult over steep terrain in the wilderness setting.
- Date:
- Sat, 04/27/2024
- Time:
- 6:30 AM - 9:00 AM
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 5
- Distance:
- 8 miles
- Minimum Age:
- 18
- Spaces Left:
- 9 of 20
Saturday, May 4, 2024
Advanced Cardio Hike: Limestone
Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Limestone Canyon, part of OC Parks’ Irvine Ranch Open Space. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings. This is an 8 mile cardio hike, completed in 2.5+ hours, includes a 1000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents. This hike is much faster than a regular walking hike. We average four (4) miles per hour fast-paced and is extremely difficult over steep terrain in the wilderness setting.
- Date:
- Sat, 05/04/2024
- Time:
- 6:30 AM - 9:00 AM
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 5
- Distance:
- 8 miles
- Minimum Age:
- 18
- Spaces Left:
- 15 of 20
Saturday, June 29, 2024
Advanced Cardio Hike: Limestone
Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Limestone Canyon, part of OC Parks’ Irvine Ranch Open Space. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings. This is an 8 mile cardio hike, completed in 2.5+ hours, includes a 1000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents. This hike is much faster than a regular walking hike. We average four (4) miles per hour fast-paced and is extremely difficult over steep terrain in the wilderness setting.
- Date:
- Sat, 06/29/2024
- Time:
- 6:30 AM - 9:00 AM
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 5
- Distance:
- 8 miles
- Minimum Age:
- 18
- Spaces Left:
- Registration for this event opens at 8:00am on 06/14/2024
