Mission Trails Regional Park: Hikes, Map & Visitor Center

Mission Trails Regional Park is an 8,000-acre city park in northeast San Diego with roughly 40 miles of trails, five peaks to climb, a free Visitor Center, the historic Old Mission Dam and a lakeside campground. The most popular hike is Cowles Mountain, 3 miles round trip to the highest natural point in the City of San Diego. The park is open and free to enter, though a long-running pipeline project has closed part of Father Junipero Serra Trail to cars.

The park at a glance

The park sits about 12 miles from downtown, along Mission Gorge Road between the San Carlos neighborhood and Santee. The City of San Diego manages it, and the Mission Trails Regional Park Foundation has been its nonprofit partner since 1988. The landscape is rugged chaparral, oak-lined canyons and the San Diego River gorge, which the park describes as close to how San Diego looked before European contact.

There is no entry fee, and the San Diego Tourism Authority describes everything in the park as free. Posted lot rules can change, so read the signs when you park.

Hours and gate times

• Trails: open daily.
• Visitor Center: 9 a.m. to 5 p.m. daily, closed Thanksgiving, Christmas Day and New Year’s Day.
• Gated parking areas: gates open at 8 a.m. and close at 5 p.m. from November through March, and 7 p.m. from April through October, according to the park’s trail map. If you plan to hike past closing, park outside the gates or you risk getting locked in.
• Old Mission Dam lot: listed as open 8 a.m. to 7 p.m., but it follows the same seasonal gate schedule, so plan to be out by 5 p.m. in winter.

Is Mission Trails open? 2026 construction update

The park is open, but expect changes on its main road. The East County Advanced Water Purification project has been laying a pipeline along Father Junipero Serra Trail, the 2.6-mile road that runs through the gorge from the Visitor Center to Old Mission Dam.

• Closed to cars: Father Junipero Serra Trail is closed to vehicles between the gate near the Visitor Center and the Old Mission Dam parking lot. The project announced this closure through summer 2028. It remains open to pedestrians and bicyclists.
• Progress: As of an August 19, 2026 project update, pipeline installation inside the park is complete, more than a year ahead of schedule. Crews are still working on vaults, connections, testing and surface restoration, Monday to Friday from 7 a.m. to 4 p.m.
• Access restored: The left turn from eastbound Mission Gorge Road onto Father Junipero Serra Trail has reopened, so the detour to the Visitor Center entrance is gone.
• Short trailhead closures have happened on weekdays during this project. Check the Foundation’s site or call the Visitor Center at 619-668-3281 before a weekday hike.

What this means in practice: drive to the Visitor Center for the west end of the gorge, or to the Old Mission Dam lot from the east end off Mission Gorge Road. You can no longer drive the road between them.

Best hikes in Mission Trails

Distances and climbs below come from the park’s trail map.

Hike	Distance	Climb	Good for
Kumeyaay Lake Nature Trail	1 mile	Minimal	Families, birdwatching
Deerfield Loop from the Visitor Center	1.1 miles round trip	182 ft	Short, easy leg-stretch
Oak Canyon from Old Mission Dam	About 3 miles round trip	Gentle	Shade, seasonal creek
Cowles Mountain via Golfcrest Drive	3 miles round trip	950 ft	Classic summit, views
Cowles Mountain via Big Rock Park	5 miles round trip	1,192 ft	Quieter, longer route

Cowles Mountain

Cowles Mountain (1,592 feet) is the park’s high point and San Diego’s busiest summit hike. The main trailhead is on Golfcrest Drive in San Carlos: 1.5 miles each way with about 950 feet of climbing on a steep, rocky, fully exposed trail. On clear days you can see the ocean, downtown and the mountains to the east.

Other routes are longer and less crowded: the Cowles Service Road (1.6 miles one way), Mesa Road (2.1 miles) and Big Rock Park (2.5 miles). For more, hike 1.5 miles from the summit to Pyles Peak (1,379 feet).

There is no shade. In warm weather, start at sunrise and carry more water than you think you need. The Golfcrest lot fills early on weekends, so arrive early or try one of the longer routes.

Old Mission Dam and Oak Canyon

The Old Mission Dam was built in the early 1800s by Kumeyaay laborers under the direction of Franciscan missionaries to send river water to Mission San Diego de Alcalá. Much of the original stone structure is still standing, and it is a listed historic landmark. A wheelchair-accessible path leads from the lot to a viewing terrace over the river. The park’s dam page asks visitors not to leave valuables in their cars.

From the dam, Oak Canyon is a mostly flat out-and-back of about 3 miles under live oaks and sycamores. A seasonal waterfall about a mile in flows after rain and is dry most of the year. At the junction past the falls, a steep spur climbs toward the Fortuna peaks.

The five peaks

The park’s five summits are Cowles Mountain, Pyles Peak (1,379 feet), North Fortuna (1,291 feet), Kwaay Paay (1,194 feet) and South Fortuna (1,094 feet). The official 5-Peak Challenge ended in 2020, and the park no longer gives out pins or certificates. Many hikers still link all five in a long, hard day. Plan your route with the trail map, start early and bring plenty of water, because there are few water sources on the ridges.

Rock climbing is also one of the park’s listed activities; our rock climbing guide covers where to climb around the county.

Mission Trails map and the Visitor Center

The Foundation’s free trail map PDF shows every trailhead and staging area (Visitor Center, Cowles, West Fortuna, East Fortuna, Old Mission Dam, Kumeyaay Lake, Big Rock, Mesa and Barker Way), with mileage and difficulty. Download it before you go, because cell coverage in the gorge can be patchy.

The Visitor Center is at One Father Junipero Serra Trail, San Diego, CA 92119, off Mission Gorge Road. It has exhibits on the park’s natural and cultural history, a gift shop, paper maps and staff who can tell you about current trail conditions. It is the best first stop for a new visitor.

Kumeyaay Lake Campground

Kumeyaay Lake Campground is the only place in the park where overnight camping is allowed. Details:

• 46 sites at $22.78 per night
• Camping on Friday and Saturday nights only
• Reserve online; cash is no longer accepted
• Cancellations must be made 14 days ahead
• Fires only in the fire rings at each site
• Monday to Thursday, the campground is open for day use, with picnic tables for hikers and cyclists

The 1-mile Kumeyaay Lake Nature Trail starts nearby and is the park’s easiest walk, with good birdwatching on the lake. Call 619-668-2748 for campground questions.

Lake Murray

Lake Murray, a city reservoir at the park’s southwest corner, has a paved path popular with walkers, runners and cyclists. You can go about 3.2 miles to the dam gate and turn back. Enter from the Kiowa Drive lot, Baltimore Drive or Murray Park Drive. The lake is open sunrise to sunset but closed the second Tuesday of each month and on Thanksgiving, Christmas and New Year’s Day. Dogs must stay leashed and at least 50 feet from the water. Check the Lake Murray page for fishing and boat rental details before you go.

Trail rules

• Dogs: on a leash no longer than 8 feet, under control at all times.
• Bikes: yield to hikers and horses and follow the posted speed limits (5 mph in parking lots and the campground). The trail map includes a BMX track near the Cowles staging area, and the Deerfield Loop is rated easy for riders.
• Camping: only at Kumeyaay Lake Campground.
• Stay on marked trails. Shortcuts and social trails damage habitat and erode the slopes.
• Rattlesnakes are common in warm months. Watch where you put your hands and feet, especially on rocky sections.

Tips and nearby pairings

• Go early or late. Most trails have little shade, and summer afternoons can be dangerously hot.
• After rain, Oak Canyon and the river are at their best, but some trails get muddy. Check with the Visitor Center.
• Bring your dog on leash for an easy loop, or see our San Diego dog parks guide for off-leash options afterward.
• Make it a lakes day by adding a morning of fishing, starting with our Miramar Lake fishing guide.