Rose Canyon Trail: Rose Canyon Open Space Park Guide

Rose Canyon Open Space Park is a narrow, roughly 4-mile canyon in University City with an easy, mostly wide dirt trail running along its floor. Most people hike from the Genesee Avenue trailhead, across from University City High School, west toward Regents Road or all the way to Bothe Avenue. It’s free, open to leashed dogs and mountain bikes, and has no facilities.

What Rose Canyon is

The canyon cuts east to west through University City, between the UTC area to the north and the Governor Drive neighborhoods to the south. The City of San Diego’s park page describes a mix of coastal sage scrub, chaparral, oak woodland and rare riparian habitat. Rose Creek meanders along the canyon floor and eventually drains into Mission Bay.

Friends of Rose Canyon, the volunteer group that looks after the park, puts the canyon at about 4 miles long and, on average, less than a quarter mile wide. That narrowness is the reason it feels so sheltered. A few steps down from a busy street, the sound drops off, the oaks close in and you’re on a creekside path.

The canyon carries some history in its name. The Kumeyaay lived here first. Louis Rose, an early San Diego businessman, established a ranch in the canyon in 1853, and the Sawday Ranch operated here until the 1960s.

Trailheads and parking

There is no official trailhead parking lot or fee station. You enter from neighborhood streets at these points:

Entrance	Where	Parking notes
Genesee Avenue	Across from University City High School	Use the high school lot only outside school hours, then cross Genesee at the light. On school days, look for street parking up Genesee near Decoro Street.
Regents Road (south)	Where Regents dead-ends, about two blocks north of Governor Drive	Street parking available
Regents Road (north)	Where Regents dead-ends from the UTC side	No dedicated lot; follow posted street signs
Bothe Ave & Bloch St	West University City, south side	No dedicated lot; residential street parking

Be a good neighbor on these residential streets. Don’t block driveways or mailboxes, and keep voices down at early-morning starts.

The hike

Distance and difficulty

The classic route goes from Genesee Avenue to the Bothe Avenue end and back. Hiking San Diego County logs it at about 5.5 miles out and back, rated easy, with roughly 450 feet of elevation change. If you want something shorter, walk from Genesee to the point where the Regents Road dead ends meet the canyon and turn around. Regents Road does not cross the canyon, so this is a natural turnaround, and it makes for a noticeably shorter outing.

What the trail is like

• Mostly wide and flat. The main path is a broad dirt route along the canyon floor, wide enough to walk two abreast and pass bikes comfortably.
• Shade in patches. Coast live oaks, sycamores and willows shade the creekside sections. Other stretches are open chaparral, including one sunny hill climb.
• Rockier at the west end. Toward Bothe Avenue the trail gets rougher underfoot.
• The railroad. An active rail line runs through the canyon, and Coaster commuter trains pass periodically. Stay off the tracks and cross only at established crossings.
• Freeway noise. As you near I-5 at the western end, traffic noise picks up noticeably.

Want more mileage?

A side trail under the State Route 52 overpass connects to San Clemente Canyon and Marian Bear Memorial Park. Linking the two canyons turns an easy morning walk into a longer outing.

Rules

• Dogs: allowed on a leash no longer than 8 feet. That’s the city rule for all parks, trails and canyons. Pick up after your dog. Rose Canyon is not an off-leash area. For that, see our guide to San Diego dog parks.
• Bikes: mountain bikes are permitted on the canyon’s dirt roads. Yield to hikers and slow down on blind bends.
• No motorized vehicles.
• No facilities: there are no restrooms, water fountains or trash cans along the trail. Bring water and pack out everything.
• No fees or permits are needed for a regular hike.
• Report problems: the city assigns a park ranger to the area. To report illegal activity, encroachment or maintenance needs, call 858-581-9961. In an emergency, call 911.

When to go

Rose Canyon is a year-round hike. That said:

• Mornings are best for shade, cooler temperatures and birds.
• Winter and spring bring green slopes and the most water in Rose Creek. After heavy rain, low spots on the canyon floor can turn muddy, so give the trail a day or two to drain. Check the San Diego weather before you go.
• Summer afternoons get hot on the exposed hill sections. Start early or stick to the shaded creek stretch.

What you might see

The city lists raccoons, skunks, rabbits, coyotes, foxes and mule deer among the canyon’s wildlife, along with many species of owls and hawks. Most mammals keep out of sight during the day. You’re far more likely to see lizards, rabbits, songbirds and a hawk circling overhead. Birders in the riparian sections sometimes spot herons along the creek.

Things to watch out for

• Poison oak grows along parts of the trail. The path is wide enough to avoid it, so keep kids and dogs on the main route. Learn the “leaves of three” look before you go.
• Rattlesnakes live in San Diego’s open-space canyons. Watch where you step on warm days and keep dogs close.
• Stagnant water can collect at a creek crossing in dry months. It’s unpleasant, not dangerous. Just don’t let dogs drink it.

Rose Canyon by bike

Two different experiences share the name:

1. The open space park trail described above: dirt, easy to moderate, mixed with hikers and dogs. Mountain bikes are allowed on the dirt roads.
2. The Rose Canyon Bicycle Path: a smooth paved path along the canyon’s west end, squeezed between the rail line and I-5. According to TrailLink, its north end is near Gilman Drive and La Jolla Colony Drive, and its south end is at the north end of Santa Fe Street, which has a cul-de-sac with parking. This is a commuter-style connector, not a nature trail.

For longer routes that link Rose Canyon to Mission Bay and the coast, see our guide to biking in San Diego.

Who it suits

• Locals and visitors staying around UTC or La Jolla who want a real dirt trail 10 minutes from their hotel.
• Dog owners looking for a long, shaded leashed walk.
• Families with school-age kids, using the Genesee to Regents out-and-back.
• Beginner mountain bikers looking for a gentle canyon ride.

It’s not the place for big views or ocean scenery. For that, head to Torrey Pines. If you want a larger open space with summit trails, try Mission Trails Regional Park.

Nearby pairings

• Westfield UTC is just north of the canyon, an easy stop for lunch, coffee or a post-hike smoothie. See our Westfield UTC guide.
• La Jolla is a short drive west for a coastal walk after the canyon.
• San Clemente Canyon / Marian Bear Memorial Park, just south across SR-52, is a similar creekside trail if you want to come back for another canyon walk.

Quick facts

• Park: Rose Canyon Open Space Park, University City, San Diego (City of San Diego open space)
• Main trailheads: Genesee Ave (across from UC High), Regents Rd dead ends, Bothe Ave & Bloch St
• Typical hike: about 5.5 miles out and back, about 450 ft elevation change, easy
• Dogs: yes, on a leash of 8 feet or shorter
• Bikes: yes, on dirt roads
• Cost: free
• Facilities: none