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, October 14, 2017
CANCELLED due to Fire Weather: Cardio Hike: Limestone Canyon and The Sinks
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.
Saturday, October 21, 2017
CANCELLED due to Fire Weather: Advanced Cardio Hike: Limestone Canyon to Raptor and Limestone Ridge
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.
Saturday, November 4, 2017
Cardio Hike: Limestone Canyon and The Sinks
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.
Saturday, December 9, 2017
CANCELLED due to Fire Weather: Cardio Hike: Limestone Canyon and The Sinks
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.
Saturday, December 30, 2017
Extreme Cardio Hike: Limestone
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.
Saturday, February 17, 2018
Extreme Cardio Hike: Limestone
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.
Sunday, February 18, 2018
Cardio Hike: Limestone Canyon and The Sinks
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.
Sunday, March 18, 2018
Cardio Hike: Limestone Canyon and The Sinks
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.
Saturday, March 24, 2018
Extreme Cardio Hike: Limestone
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.
Thursday, April 5, 2018
Cardio Hike: Mesa Loop
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.
Saturday, April 14, 2018
Extreme Cardio Hike: Fremont Run and Hike Loop
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.
Cardio Hike: Limestone Canyon and The Sinks
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.
Thursday, May 3, 2018
Cardio Hike: Baker Canyon
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.
Thursday, May 17, 2018
Advanced Cardio Hike: Limestone Ridge, Dripping Springs & Sandtrap
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.
Sunday, June 17, 2018
Cardio Hike: Limestone Canyon and The Sinks
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.
Thursday, June 21, 2018
Advanced Cardio Hike: Dripping Springs & Shoestring
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.
Saturday, June 23, 2018
Extreme Cardio Hike: Limestone
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 8 mile cardio hike, completed in 2 1/2 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.
There is one scheduled rest stop at the East Sinks Viewing Deck on this approximately 8 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.
Saturday, June 30, 2018
Extreme Cardio Hike: Limestone
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 8 mile cardio hike, completed in 2 1/2 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.
There is one scheduled rest stop at the East Sinks Viewing Deck on this approximately 8 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.
Thursday, September 6, 2018
Cardio Hike: Mesa Loop
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.
Thursday, September 20, 2018
Advanced Cardio Hike: Limestone Ridge, Dripping Springs & Sandtrap
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.