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Experienced mountain bikers can explore one of the most rugged and remote areas of OC Parks’ Irvine Ranch Open Space from the trails of Fremont Canyon Nature Preserve on this moderate-paced ride through Fremont, Blind, and Weir Canyons. Fremont Canyon...

Date:
Sun, 09/20/2026
Time:
7:30 am - 10:30 am
Where:
Fremont Canyon Nature Preserve
Difficulty Rating:
4
Distance:
15 miles
Minimum Age:
16
Registration:
Registration Closed

Experience the beauty of Bommer Canyon that takes you to the back gate of Hogback Ridge, during this moderate-paced, interpretive hike in the Irvine Open Space Preserve. We’ll experience the mature coastal sage scrub and fantastic views overlooking the city...

Date:
Sun, 09/20/2026
Time:
7:15 am - 10:30 am
Where:
Bommer Canyon Preserve
Difficulty Rating:
3
Minimum Age:
12
Registration:
Registration Closed

Join us for a slow-paced hike in Limestone Canyon Nature Preserve. Our pace will be around 2.5 MPH for this 5.5-mile hike with an elevation gain of about 400 feet. Slowing our pace will encourage us to experience the land...

Date:
Mon, 09/21/2026
Time:
7:00 am - 10:30 am
Where:
Limestone Canyon Nature Preserve
Difficulty Rating:
3
Distance:
5.5 miles
Minimum Age:
18
Registration:
Registration Closed