Take this 3.5-mile hike into the ‘Yosemite of Orange County’

Picturesque rock formations, caves and panoramic ridgelines are part of the beauty of Fremont Canyon.

Open space preservation on The Irvine Ranch began 125 years ago with the dedication of Irvine Regional Park – the first county park. Since then, over 60% of the Ranch has been permanently preserved, stretching 22 miles from mountains to sea.

The best way to see these wildlands is on the trail, so I joined the 3.5-mile Waterworks Nature Hike into Fremont Canyon.

Some locals call it the “Yosemite of Orange County” for its picturesque rock formations, caves and panoramic ridgelines. But another highlight is its biological diversity: from oak woodlands and rare Tecate cypress trees to mule deer and golden eagles.

“We have so much healthy native wildlife back here,” said OC Parks resource specialist Gray Crouch, who led the hike. “This biodiversity far exceeds what you’d see in other natural areas.”

Our hike started inside Irvine Regional Park and rose 680 feet, climbing up above Irvine Lake along the way.

We learned about laurel sumac, a bright-green shrub that folds its leaves along the midrib to prevent overexposure to the sun, and California sagebrush, known as “cowboy cologne” because cowboys used the aromatic plant as a natural deodorant.

I wasn’t the only one grateful to have 57,500 acres of open space so close to home on The Irvine Ranch.

“People have no idea what they’re missing,” said fellow hiker Pat Allen. “I can’t imagine anywhere else with Irvine’s population that still has this much access to such natural diversity.”

Visit letsgooutside.org to register for this and other hikes in Fremont Canyon.


Red Rocks Trail

See one of OC’s most striking geological landmarks: the Red Rocks of Black Star Canyon. These towering pinnacles date back 20-40 million years. Irvine Ranch Conservancy offers many interpretive hikes along this 3.5-mile trail, including family hikes and full-moon walks. Learn more at letsgooutside.org/activities.

Quail Hill Loop Trail

Quail Hill’s gentle slope makes it a favorite for families, joggers and dog owners. No trail map is needed. Just follow the 1.8-mile loop. This convenient pocket of wilderness is just 2 miles from Irvine Spectrum Center. Watch for roadrunners in the grass and birds of prey, including  northern harriers and white-tailed kites, up above.

Ridge Route Loop

This 3-mile hike starts at Bommer Canyon Cattle Camp, an Old West setting where ranch hands once rounded up cattle. You’ll be treated to towering 100-year-old sycamores, grasslands and ocean-view ridgelines, as well as relics from the site’s ranching past. Learn more at letsgooutside.org/activities.

  • New hiking trails

    Civic leaders and outdoor enthusiasts celebrate the opening of Red Rock Wilderness area, now available for you to enjoy.

  • 10,000 STEPS

    Start your day with a relaxing hike at Bommer Canyon.

  • The view is good from the top

    Irvine’s park system has been named No. 1 in California and No. 4 in the United States by the Trust …

  • 10,000 steps at Mason Regional Park 

    A 9-acre lake, popular among model sailboaters, is just one of many attractions at the 339-acre William R. Mason Regional Park. …