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Upper Aliso Canyon in Chino Hills State Park

Upper Aliso Canyon vista
Upper Aliso Canyon vista

The sprawling Chino Hills State Park east of Los Angeles offers 14,000 acres of open space for hikers, equestrians, and mountain bikers to roam (note: dogs are not welcome). Unfortunately, the November 2008 “Freeway Complex Fire” swept some 95 percent of the state park’s lands. The landscape, however, is accustomed to periodic wildfires, and with this season’s past rainfall, it now looks as spring-green as ever. If you go, don’t wait past April, when green fades quickly to golden brown, and hiking shoes and socks tend to collect an awful lot of very sharp “stickers” (grass seeds).

To get to the trailhead for the pleasant Upper Aliso Canyon Trail you’ll want to head to the east (San Bernardino County as opposed to Orange County) side of the park. From Corona (on Interstate 15), exit on the westbound 91 Freeway. Drive five miles, and then swing right on Highway 71. Continue another seven miles and exit at Soquel Canyon Parkway in Chino. Drive west on Soquel Canyon Parkway 1.0 mile to Elinvar Drive. Turn left, left again after 0.2 mile, and then immediately right on the gravel road entering Chino Hills State Park. Continue nearly three miles to the Rolling M Ranch (park office) at the end of the road, where parking is available.

On the loop through the upper reaches of Aliso and Raptor canyons, you’ll appreciate the fine vistas (on clear days, at least) of miles of empty hill country presided over by the snow-dusted summits of the San Gabriel Mountains. Depending on the mix of recent rainfall and warm sunshine, you may encounter a jungle-like growth of nonnative mustard plants growing alongside (or even on) the upper parts of the trail. If that’s the case and you don’t feel like fighting it, just make this hike an out-and-back one.

Starting from Rolling M Ranch, head north past outlying staff residences and continue on an old dirt road up the west bank of sycamore-lined Aliso Canyon. At 0.7 mile, the old road passes under some high-voltage wires and soon bends decidedly west up along the bottom of a shallow tributary called Raptor Canyon.

At 1.1 miles, the road veers right and zigzags up the slope to the north. Stay left on the path that strikes west up a grassy ridge just south of Raptor Canyon. After crossing under another powerline, you begin a stiff climb of about 500 vertical feet, up through tall-growing grasses, topping out on Raptor Ridge. On the way up, you can look out over the upper reaches of Raptor Canyon, which features some rather scraggly looking live oak and walnut trees, victims and survivors of the fire. True to the namesake of this canyon, you’ll probably notice a hawk or two cruising on updrafts.

At 2.0 miles, atop Raptor Ridge, the trail descends a little and you meet a powerline access road. Turn left (east), walk 0.3 mile toward a complex of electric towers, and then go right on a road that drops into the wooded drainage to the south. At the bottom (2.8 miles), turn east and return toward your starting point by way of the gently descending Telegraph Canyon Trail (a graded dirt road). When you reach the paved entrance road, turn left and complete the remaining 200 yards back to Rolling M Ranch.

This article contains information about a publicly owned recreation or wilderness area. Trails and pathways are not necessarily marked. Conditions can change rapidly. Hikers should be properly equipped and have safety and navigational skills. The Reader and Jerry Schad assume no responsibility for any adverse experience.

Upper Aliso Canyon
Ramble over the spring-green hills of Chino Hills State Park
Distance from downtown San Diego: 118 miles
Hiking length: 3.8 miles
Difficulty: Moderate

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Upper Aliso Canyon vista
Upper Aliso Canyon vista

The sprawling Chino Hills State Park east of Los Angeles offers 14,000 acres of open space for hikers, equestrians, and mountain bikers to roam (note: dogs are not welcome). Unfortunately, the November 2008 “Freeway Complex Fire” swept some 95 percent of the state park’s lands. The landscape, however, is accustomed to periodic wildfires, and with this season’s past rainfall, it now looks as spring-green as ever. If you go, don’t wait past April, when green fades quickly to golden brown, and hiking shoes and socks tend to collect an awful lot of very sharp “stickers” (grass seeds).

To get to the trailhead for the pleasant Upper Aliso Canyon Trail you’ll want to head to the east (San Bernardino County as opposed to Orange County) side of the park. From Corona (on Interstate 15), exit on the westbound 91 Freeway. Drive five miles, and then swing right on Highway 71. Continue another seven miles and exit at Soquel Canyon Parkway in Chino. Drive west on Soquel Canyon Parkway 1.0 mile to Elinvar Drive. Turn left, left again after 0.2 mile, and then immediately right on the gravel road entering Chino Hills State Park. Continue nearly three miles to the Rolling M Ranch (park office) at the end of the road, where parking is available.

On the loop through the upper reaches of Aliso and Raptor canyons, you’ll appreciate the fine vistas (on clear days, at least) of miles of empty hill country presided over by the snow-dusted summits of the San Gabriel Mountains. Depending on the mix of recent rainfall and warm sunshine, you may encounter a jungle-like growth of nonnative mustard plants growing alongside (or even on) the upper parts of the trail. If that’s the case and you don’t feel like fighting it, just make this hike an out-and-back one.

Starting from Rolling M Ranch, head north past outlying staff residences and continue on an old dirt road up the west bank of sycamore-lined Aliso Canyon. At 0.7 mile, the old road passes under some high-voltage wires and soon bends decidedly west up along the bottom of a shallow tributary called Raptor Canyon.

At 1.1 miles, the road veers right and zigzags up the slope to the north. Stay left on the path that strikes west up a grassy ridge just south of Raptor Canyon. After crossing under another powerline, you begin a stiff climb of about 500 vertical feet, up through tall-growing grasses, topping out on Raptor Ridge. On the way up, you can look out over the upper reaches of Raptor Canyon, which features some rather scraggly looking live oak and walnut trees, victims and survivors of the fire. True to the namesake of this canyon, you’ll probably notice a hawk or two cruising on updrafts.

At 2.0 miles, atop Raptor Ridge, the trail descends a little and you meet a powerline access road. Turn left (east), walk 0.3 mile toward a complex of electric towers, and then go right on a road that drops into the wooded drainage to the south. At the bottom (2.8 miles), turn east and return toward your starting point by way of the gently descending Telegraph Canyon Trail (a graded dirt road). When you reach the paved entrance road, turn left and complete the remaining 200 yards back to Rolling M Ranch.

This article contains information about a publicly owned recreation or wilderness area. Trails and pathways are not necessarily marked. Conditions can change rapidly. Hikers should be properly equipped and have safety and navigational skills. The Reader and Jerry Schad assume no responsibility for any adverse experience.

Upper Aliso Canyon
Ramble over the spring-green hills of Chino Hills State Park
Distance from downtown San Diego: 118 miles
Hiking length: 3.8 miles
Difficulty: Moderate

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4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs
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