Northeast of San Diego and northwest of La Mesa, the Mission Trails Regional Park has a diverse network of fireroads and singletrack for all levels of mountain bike riders. For easy mountain bike rides, try Oak Grove Trail, Rim Trail and Lake Murphy Path. For some challenging climbs and descents, try Cowles Mountain Summit or Kwaay Peak.
To reach the mountain biking trailhead from San Diego, head north on US15 to Mission Gorge Road. Turn right heading east on Mission Gorge Road to the park.
Trail are soft when wet -- only mountain bike ride this area when really dry.
Overall, Mission Trails Regional Park is the 39th most popular mountain bike trail of all 132 mountain biking rides in California.