Best Hiking Trails in Orange County, California

Hiking trails in Orange County pack over 300 miles into California’s most densely populated coastal county, 60-plus miles of coastline, the Santa Ana Mountains, and rolling inland grassland all within a short drive of some of the state’s most built-up suburbs. I’ve spent four-plus years cataloging trails across this state, and Orange County consistently surprises people who assume a county this urbanized can’t have real hiking; it genuinely does, across four distinct zones that feel like entirely different regions despite being separated by only a short drive.

Disclosure: Please note that some of the links below are affiliate links and at no additional cost to you, I may earn a commission. Know that I only recommend hiking gear I personally stand behind; when you use my affiliate links, it helps me run this blog and keep all of this content free of charge for readers (like you).

This guide covers each one, plus a real update on a popular summit hike that’s currently off-limits, worth knowing before you build a trip around it. That same coastline keeps going south past the county line into the hiking trails in San Diego, California’s other major Southern California coastal hub.

Key takeaways:

• Orange County spans four hiking zones: the coastal parks (Crystal Cove, Laguna Coast), Aliso and Wood Canyons, the Santa Ana Mountains (Cleveland National Forest), and Chino Hills State Park.
• Crystal Cove does not require a reservation for day hiking; it’s pay-on-arrival parking ($15–20/vehicle), not a booking system.
• Holy Jim Trail and the Santiago Peak route are currently closed under a Cleveland National Forest burned-area closure following the 2024 Airport Fire; check current status before planning a trip.
• Aliso and Wood Canyons and most of Chino Hills State Park require no reservation and are free or low-cost.
• Chino Hills’ wildflower bloom typically peaks February through April, weather-dependent.

Related

• 5 Best Hiking Trails in Orange County: Top Picks for Locals & Visitors
• 5 Best Coastal Hiking Trails in Laguna Beach, Orange County

Why Orange County has more hiking than most people expect

Orange County’s hiking profile includes 60-plus miles of coastline, the Santa Ana Mountains (Cleveland National Forest), Chino Hills State Park, and Aliso and Wood Canyons, over 300 miles of trails total in a county best known for suburbs and beaches, not backcountry.

Orange County’s four hiking zones

Crystal Cove and the Laguna coast offer bluff-top ocean trails and inland canyon backcountry, the closest thing the county has to a truly coastal wilderness experience. Aliso and Wood Canyons Wilderness Park is the largest natural open space in the county, threading a shaded canyon corridor through Laguna Beach’s inland edge.

Chino Hills State Park delivers rolling grassland ridges and some of the best spring wildflower displays in Southern California, feeling closer to the Central Valley’s open hills than to the coast just a short drive away. And Cleveland National Forest’s Santa Ana Mountains, anchored by Saddleback’s twin peaks, hold the county’s genuine mountain terrain and highest elevations, though recent fire activity has affected access to some of its most popular routes.

Best hiking trails at Crystal Cove State Park, Orange County

Crystal Cove State Park covers 2,791 acres total, including a 2,400-acre undeveloped backcountry with 15-plus miles of trails, alongside the coastal Historic District’s vintage beach cottages, a genuinely rare combination of preserved coastline and real canyon hiking in one park, and one of the last stretches of undeveloped Orange County coast left at this scale.

El Moro Canyon Trail: Crystal Cove’s best inland backcountry hike

This roughly 8-mile loop with about 1,000 ft of gain runs entirely inland through coastal sage scrub, with genuine ocean views from the ridge sections despite having no direct beach access itself.

Mountain bikers share the trail, so stay aware on blind curves, and bring your own water; there’s none along the route, and this open, mostly treeless terrain gets hot fast without shade. Spring is the best season here, when wildflowers fill the canyon, and temperatures haven’t yet climbed into summer’s uncomfortable range.

Crystal Cove coastal bluff trail: Orange County’s best ocean view walk

This flat, paved 2.5-mile trail runs along the bluff tops with Pacific views the entire way, passing above the historic cottage district and connecting several cove beaches. It’s the only trail in the park where leashed dogs are allowed, and no reservation is needed, just the standard day-use parking fee, paid on arrival through the park’s LAZ Parking system rather than booked ahead through any online portal.

Best hiking trails in Aliso and Wood Canyons Wilderness Park, Orange County

At 4,500 acres adjacent to Laguna Beach, Aliso and Wood Canyons is the largest natural open space in Orange County, with more than 30 miles of trails through shaded canyon terrain, no reservation required, though a small $3 daily parking fee applies at the main Awma Road lot, which makes it one of the easiest genuinely good hikes in the county to plan on short notice.

Wood Canyon Trail: Aliso’s best long canyon hike

Running 7.3 miles round-trip to Dripping Cave, this trail follows a mostly flat canyon floor through genuinely shaded, streamside terrain, a real break from the sun exposure common on most Orange County trails, and a good pick for a hot day when other county trails feel unbearable by midmorning.

Dripping Cave itself is a water-carved sandstone alcove worth the full distance, historically used as a shelter by stagecoach robbers according to local lore, and parking at the Awma Road lot costs $3/day (cash or card, annual passes available), though free street parking is sometimes available nearby, and mountain bikers share the path throughout.

Best hiking trails in the Santa Ana Mountains, Orange County

Cleveland National Forest holds Santiago Peak at 5,689 ft, the highest point in Orange County, along with Trabuco Canyon and the broader Santa Ana Mountains trail network that gives the county its only genuine mountain hiking.

Holy Jim Trail to Santiago Peak: Orange County’s most rewarding summit hike (currently closed)

Under normal conditions, this is a roughly 15.6-mile round-trip with about 4,100 ft of gain to the county’s highest summit, passing Holy Jim Falls along the way, a genuinely rewarding full-day hike that most Orange County hikers treat as the local equivalent of a Sierra summit push.

As of this writing, though, Holy Jim Trail and the Santiago Peak route via Holy Jim remain closed under a Cleveland National Forest burned-area closure following the 2024 Airport Fire; this is a real, current closure, not a hypothetical caution.

Don’t plan a trip around this hike without checking Cleveland National Forest’s current alerts page first; burned terrain carries real hazards (unstable slopes, standing dead trees) beyond just being off-limits on paper, and closures like this one have a track record of extending well past their initial estimated reopening dates.

An Adventure Pass is required for the trailhead whenever it does reopen, and alternative approaches to Santiago Peak exist via other Cleveland National Forest routes if the summit itself is the goal and Holy Jim specifically isn’t available.

Laguna Coast Wilderness Park trails: Laguna Beach’s best canyon hiking

This 6,500-acre preserve adjacent to Laguna Beach offers free access to canyon trails including Laurel Canyon and the area around Barbara’s Lake, with seasonal docent-led hikes for visitors who want more context than a trail map provides.

The Top of the World trail, a short, popular climb to a ridge-top viewpoint over Laguna Beach and the coastline, sits within this same connected trail network and is genuinely one of the best sunset spots in the county, worth calling out on its own given how frequently it’s searched for specifically. It connects directly into the broader Laguna Coast and Aliso/Wood Canyons trail system, so an ambitious hiker can link several of this guide’s Laguna-area trails into one longer day.

Best hiking trails in Chino Hills State Park, Orange County

Chino Hills State Park covers 14,173 acres of rolling grassland hills, most famous for its spring wildflower displays; poppies typically bloom February through April, weather-dependent, and shared use with mountain bikers throughout. The park’s rolling, largely treeless terrain looks and feels distinctly different from the coastal and canyon parks elsewhere in the county, closer in character to inland Southern California than to anything near the beach. Chino Hills State Park actually extends across the county line into Hiking Trails in San Bernardino County, so several of its northern trailheads are technically outside Orange County itself.

Telegraph Canyon Trail: Chino Hills’ best long valley walk

Running about 9 miles one-way along a flat canyon floor through oak woodland and grassland, this trail doubles as a genuine wildlife corridor; deer and bobcat sightings are realistic for patient, quiet hikers, and the shaded oak sections offer welcome relief on an otherwise exposed hike.

It’s accessible year-round, with the best wildflower displays typically in April, and the Brea-side access point via Carbon Canyon Regional Park offers an alternative to the main trailhead if you’re approaching from the northern part of the county. Day use runs $10 per vehicle, and the one-way distance makes a car shuttle worth arranging if you don’t want to retrace your steps.

If you’re building broader hiking skills, our hiking safety guide covers preparation that applies to Orange County’s fire-prone terrain specifically, and checking a trail’s current difficulty rating matters as much here as anywhere, especially with real elevation options like Santiago Peak in the mix. Whichever zone you start with, checking the managing agency’s current alert page before you drive out is worth the few minutes it takes, particularly given how much closures and access can shift after fire season in this part of the state.

Frequently asked questions: hiking trails in Orange County