Activities and Programs

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.

Saturday, October 14, 2017

CANCELLED due to Fire Weather: Cardio Hike: Limestone Canyon and The Sinks

Hiking & Fitness

Explore beautiful Limestone Canyon on this challenging fast-paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands. Multiple steep climbs and descents are included. Enjoy views of Saddleback Peak, the Cleveland National Forest and the Sinks along the way.

Remember, this cardio hike is much faster than a walk, and features a 1,600-foot elevation change and up to 10 miles. Experienced cardio hikers, that can hike uphill at an average pace of 3.5-to-4 mph without stopping, are welcome.  Please make sure you are in excellent physical condition!

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

CANCELLED due to Fire Weather: Cardio Hike: Limestone Canyon and The Sinks
Date:
Sat, 10/14/2017
Time:
7:00 AM - 10:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
16
Spaces Left:
Registration has closed.
More Information  

Saturday, October 21, 2017

CANCELLED due to Fire Weather: Advanced Cardio Hike: Limestone Canyon to Raptor and Limestone Ridge

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, early morning, cardio hike starting in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.
This is a 7 mile cardio hike, completed in 1.5 hours and includes a 1000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There is no rest stops on this cardio hike, and the average four (4+) mile per hour fast-paced and is extremely difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

CANCELLED due to Fire Weather: Advanced Cardio Hike: Limestone Canyon to Raptor and Limestone Ridge
Date:
Sat, 10/21/2017
Time:
6:30 AM - 8:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
8 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Saturday, November 4, 2017

Cardio Hike: Limestone Canyon and The Sinks

Hiking & Fitness

Explore beautiful Limestone Canyon on this challenging fast-paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands. Multiple steep climbs and descents are included. Enjoy views of Saddleback Peak, the Cleveland National Forest and the Sinks along the way.

Remember, this cardio hike is much faster than a walk, and features a 1,600-foot elevation change and up to 10 miles. Experienced cardio hikers, that can hike uphill at an average pace of 3.5-to-4 mph without stopping, are welcome.  Please make sure you are in excellent physical condition!

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Cardio Hike: Limestone Canyon and The Sinks
Date:
Sat, 11/04/2017
Time:
8:00 AM - 11:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
16
Spaces Left:
Registration has closed.
More Information  

Saturday, December 9, 2017

CANCELLED due to Fire Weather: Cardio Hike: Limestone Canyon and The Sinks

Hiking & Fitness

Explore beautiful Limestone Canyon on this challenging fast-paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands. Multiple steep climbs and descents are included. Enjoy views of Saddleback Peak, the Cleveland National Forest and the Sinks along the way.

Remember, this cardio hike is much faster than a walk, and features a 1,600-foot elevation change and up to 10 miles. Experienced cardio hikers, that can hike uphill at an average pace of 3.5-to-4 mph without stopping, are welcome.  Please make sure you are in excellent physical condition!

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

CANCELLED due to Fire Weather: Cardio Hike: Limestone Canyon and The Sinks
Date:
Sat, 12/09/2017
Time:
8:00 AM - 11:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
16
Spaces Left:
Registration has closed.
More Information  

Saturday, December 30, 2017

Extreme Cardio Hike: Limestone

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings. We will visit the back side of the Sinks to gain beautiful vistas of Agua Chinon and beyond. This is a 10 mile cardio hike, completed in 2 1/2 hours, includes a 2000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There is one scheduled rest stop at the East Sinks Viewing Deck on this approximately  10  mile cardio hike, and the average four (4) mile per hour fast-paced and is extremely difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Extreme Cardio Hike: Limestone
Date:
Sat, 12/30/2017
Time:
6:30 AM - 9:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
14 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Saturday, January 20, 2018

Cardio Hike: Limestone Canyon and The Sinks

Hiking & Fitness

Explore beautiful Limestone Canyon on this challenging fast-paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands. Multiple steep climbs and descents are included. Enjoy views of Saddleback Peak, the Cleveland National Forest and the Sinks along the way.

Remember, this cardio hike is much faster than a walk, and features a 1,600-foot elevation change and up to 10 miles. Experienced cardio hikers, that can hike uphill at an average pace of 3.5-to-4 mph without stopping, are welcome.  Please make sure you are in excellent physical condition!

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Cardio Hike: Limestone Canyon and The Sinks
Date:
Sat, 01/20/2018
Time:
8:00 AM - 11:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
16
Spaces Left:
Registration has closed.
More Information  

Saturday, February 17, 2018

Extreme Cardio Hike: Limestone

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings. We will visit the back side of the Sinks to gain beautiful vistas of Agua Chinon and beyond. This is a 10 mile cardio hike, completed in 2 1/2 hours, includes a 2000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There is one scheduled rest stop at the East Sinks Viewing Deck on this approximately  10  mile cardio hike, and the average four (4) mile per hour fast-paced and is extremely difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Extreme Cardio Hike: Limestone
Date:
Sat, 02/17/2018
Time:
6:30 AM - 9:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
14 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Sunday, February 18, 2018

Cardio Hike: Limestone Canyon and The Sinks

Hiking & Fitness

Explore beautiful Limestone Canyon on this challenging fast-paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands. Multiple steep climbs and descents are included. Enjoy views of Saddleback Peak, the Cleveland National Forest and the Sinks along the way.

Remember, this cardio hike is much faster than a walk, and features a 1,600-foot elevation change and up to 10 miles. Experienced cardio hikers, that can hike uphill at an average pace of 3.5-to-4 mph without stopping, are welcome.  Please make sure you are in excellent physical condition!

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Cardio Hike: Limestone Canyon and The Sinks
Date:
Sun, 02/18/2018
Time:
8:00 AM - 11:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
16
Spaces Left:
Registration has closed.
More Information  

Sunday, March 18, 2018

Cardio Hike: Limestone Canyon and The Sinks

Hiking & Fitness

Explore beautiful Limestone Canyon on this challenging fast-paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands. Multiple steep climbs and descents are included. Enjoy views of Saddleback Peak, the Cleveland National Forest and the Sinks along the way.

Remember, this cardio hike is much faster than a walk, and features a 1,600-foot elevation change and up to 10 miles. Experienced cardio hikers, that can hike uphill at an average pace of 3.5-to-4 mph without stopping, are welcome.  Please make sure you are in excellent physical condition!

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Cardio Hike: Limestone Canyon and The Sinks
Date:
Sun, 03/18/2018
Time:
7:00 AM - 10:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
16
Spaces Left:
Registration has closed.
More Information  

Saturday, March 24, 2018

Extreme Cardio Hike: Limestone

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings. We will visit the back side of the Sinks to gain beautiful vistas of Agua Chinon and beyond. This is a 10 mile cardio hike, completed in 2 1/2 hours, includes a 2000+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There is one scheduled rest stop at the East Sinks Viewing Deck on this approximately  10  mile cardio hike, and the average four (4) mile per hour fast-paced and is extremely difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Extreme Cardio Hike: Limestone
Date:
Sat, 03/24/2018
Time:
6:30 AM - 9:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
14 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Thursday, March 29, 2018

Advanced Cardio Hike: Limestone Canyon & Limestone Ridge

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, afternoon cardio hike starting in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.
This is a 5.5 mile cardio hike, completed in 1.5 hours and includes a 800+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There are no rest stops on this approximately 5.5 mile cardio hike, and the average 3.5-4 mile per hour fast-pace can be extremely difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Advanced Cardio Hike: Limestone Canyon & Limestone Ridge
Date:
Thu, 03/29/2018
Time:
6:00 PM - 7:30 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
5.5 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Thursday, April 5, 2018

Cardio Hike: Mesa Loop

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, afternoon cardio hike starting in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.
This is a 5 mile cardio hike, completed in 1.5 hours and includes a 650+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There are no rest stops on this approximately 5 mile cardio hike, and the average 3.5 mile per hour fast-pace can be difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land.

Cardio Hike: Mesa Loop
Date:
Thu, 04/05/2018
Time:
6:00 PM - 7:30 PM
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
4
Distance:
5 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Saturday, April 14, 2018

Extreme Cardio Hike: Fremont Run and Hike Loop

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, early morning cardio hike in Fremont Canyon.  This is a 16 mile cardio AND RUN hike, completed in 4 1/2 hours, includes a 3500+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Extreme Cardio Hike: Fremont Run and Hike Loop
Date:
Sat, 04/14/2018
Time:
6:30 AM - 11:00 AM
Where:
Fremont Canyon Nature Preserve
Difficulty Rating:
5
Distance:
16 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Cardio Hike: Limestone Canyon and The Sinks

Hiking & Fitness

Explore beautiful Limestone Canyon on this challenging fast-paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands. Multiple steep climbs and descents are included. Enjoy views of Saddleback Peak, the Cleveland National Forest and the Sinks along the way.

Remember, this cardio hike is much faster than a walk, and features a 1,600-foot elevation change and up to 10 miles. Experienced cardio hikers, that can hike uphill at an average pace of 3.5-to-4 mph without stopping, are welcome.  Please make sure you are in excellent physical condition!

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Cardio Hike: Limestone Canyon and The Sinks
Date:
Sat, 04/14/2018
Time:
7:00 AM - 10:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
16
Spaces Left:
Registration has closed.
More Information  

Wednesday, April 18, 2018

Advanced Cardio Hike: Limestone Ridge, Dripping Springs & Sandtrap

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, afternoon cardio hike starting in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.
This is a 8 mile cardio hike, completed in 2.5 hours and includes a 1750+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There are no rest stops on this approximately 8 mile cardio hike, and the average 3.5-4 mile per hour fast-pace can be extremely difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Advanced Cardio Hike: Limestone Ridge, Dripping Springs & Sandtrap
Date:
Wed, 04/18/2018
Time:
5:30 PM - 7:30 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
8 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Thursday, May 3, 2018

Cardio Hike: Baker Canyon

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, afternoon cardio hike starting in Baker Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.
This is a 4 mile cardio hike, completed in 1.5 hours and includes a 450+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There are no rest stops on this approximately 4 mile cardio hike, and the average 3-3.5 mile per hour fast-pace can be difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land.

Cardio Hike: Baker Canyon
Date:
Thu, 05/03/2018
Time:
6:00 PM - 7:30 PM
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
4
Distance:
4 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Thursday, May 17, 2018

Advanced Cardio Hike: Limestone Ridge, Dripping Springs & Sandtrap

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, afternoon cardio hike starting in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.
This is a 8 mile cardio hike, completed in 2.5 hours and includes a 1750+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There are no rest stops on this approximately 8 mile cardio hike, and the average 3.5-4 mile per hour fast-pace can be extremely difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Advanced Cardio Hike: Limestone Ridge, Dripping Springs & Sandtrap
Date:
Thu, 05/17/2018
Time:
6:00 PM - 8:30 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
8 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Wednesday, June 6, 2018

Cardio Hike: Mesa Loop

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, afternoon cardio hike starting in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.
This is a 5 mile cardio hike, completed in 1.5 hours and includes a 650+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There are no rest stops on this approximately 5 mile cardio hike, and the average 3.5 mile per hour fast-pace can be difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-4 activity on the land.

Cardio Hike: Mesa Loop
Date:
Wed, 06/06/2018
Time:
6:00 PM - 7:30 PM
Where:
Black Star Canyon Wilderness Park
Difficulty Rating:
4
Distance:
5 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  

Sunday, June 17, 2018

Cardio Hike: Limestone Canyon and The Sinks

Hiking & Fitness

Explore beautiful Limestone Canyon on this challenging fast-paced cardio hike. Along the trail, you’ll pass through coastal sage scrub, grasslands, and oak woodlands. Multiple steep climbs and descents are included. Enjoy views of Saddleback Peak, the Cleveland National Forest and the Sinks along the way.

Remember, this cardio hike is much faster than a walk, and features a 1,600-foot elevation change and up to 10 miles. Experienced cardio hikers, that can hike uphill at an average pace of 3.5-to-4 mph without stopping, are welcome.  Please make sure you are in excellent physical condition!

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Cardio Hike: Limestone Canyon and The Sinks
Date:
Sun, 06/17/2018
Time:
7:00 AM - 10:00 AM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
10 miles
Minimum Age:
16
Spaces Left:
Registration has closed.
More Information  

Thursday, June 21, 2018

Advanced Cardio Hike: Dripping Springs & Shoestring

Hiking & Fitness

Join us for a strenuous, extremely challenging, fast-paced, afternoon cardio hike starting in Limestone Canyon. Along the way we’ll be rewarded with panoramic views of Orange County and possible wildlife sightings.
This is a 8.5 mile cardio hike, completed in 2.5 hours and includes a 1600+ foot elevation change. This hike is for experienced, physically fit hikers who enjoy the challenge of multiple steep climbs and descents.

There are no rest stops on this approximately 8.5 mile cardio hike, and the average 3.5-4 mile per hour fast-pace can be extremely difficult over steep terrain in the wilderness setting.

Reviewing the 1-through-5 Difficulty Ratings will help you evaluate your readiness to participate in this level-5 activity on the land.

Advanced Cardio Hike: Dripping Springs & Shoestring
Date:
Thu, 06/21/2018
Time:
6:00 PM - 8:30 PM
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
5
Distance:
8.5 miles
Minimum Age:
18
Spaces Left:
Registration has closed.
More Information  
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