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.
Updated Difficulty Ratings: The Hiking and Fitness Difficulty Ratings have been updated to reflect our current activities. Please click below to read the ratings.
Click here to learn more about IRC-Certified Volunteers. • Click here to learn more about the Difficulty Ratings.
Search & Filter Activities
Tuesday, May 13, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Tue, 05/13/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- 24 of 25
Thursday, May 15, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Open Space Preserve, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Thu, 05/15/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Irvine Open Space Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- 21 of 25
Tuesday, May 20, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Tue, 05/20/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- 25 of 25
Thursday, May 22, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Open Space Preserve, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Thu, 05/22/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Irvine Open Space Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- 24 of 25
Tuesday, May 27, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Tue, 05/27/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 05/12/2025
Thursday, May 29, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Open Space Preserve, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Thu, 05/29/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Irvine Open Space Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 05/14/2025
Tuesday, June 3, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Tue, 06/03/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 05/19/2025
Thursday, June 5, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Open Space Preserve, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Thu, 06/05/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Irvine Open Space Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 05/21/2025
Thursday, June 12, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Open Space Preserve, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Thu, 06/12/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Irvine Open Space Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 05/28/2025
Tuesday, June 17, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Tue, 06/17/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 06/02/2025
Thursday, June 19, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Open Space Preserve, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Thu, 06/19/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Irvine Open Space Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 06/04/2025
Tuesday, June 24, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Ranch Open Space, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Tue, 06/24/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Limestone Canyon Nature Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 06/09/2025
Thursday, June 26, 2025
Evening Hike on Hicks Haul Road
Enjoy an evening hike through stunning rock formations and fragrant native plants as you listen to the sounds of nature. During this hike in the Irvine Open Space Preserve, you may travel at various hiking speeds based on your comfort level. This out-and-back program travels 3.5 miles round trip up to scenic Loma Ridge and back down. Please bring a red-tinted flashlight as the return portion of the hike may be after sunset.
- Date:
- Thu, 06/26/2025
- Time:
- 6:00 pm - 7:30 pm
- Where:
- Irvine Open Space Preserve
- Difficulty Rating:
- 3
- Distance:
- 3.5 miles
- Minimum Age:
- 12
- Spaces Left:
- Registration for this event opens at 8:00am on 06/11/2025
