11.5 miles
+3,450 ft elevation gain

Route suggested by Jimmy:
Mt. Lukens is with it’s 5,075 ft high the highest mountain in the City of Los Angeles.
Mt Lukens is the westernmost peak of the San Gabriel Mountains front range. Hiking to the peak gives you a glimpse into the mountainous innards of Angeles National Forest. Looking back to the west you have about 3,000 feet of prominence, with terrific views of LA and the Verdugo Mountains. On a clear day you can see from Catalina to San Gorgonio. The summit has radio towers on it, but who cares, it’s still a great hike.
This is a fun one and doesn’t get as much traffic as a lot of other more popular Southern California trails.
This is a “Clockwise” 11 mile loop up to Mt. Lukens with 3,450 ft of elevation gain, starting & finishing at Deukmejian Wilderness Park.
Leashed dogs are allowed.

Address:
Deukmejian Wilderness Park
3429 Markridge Road, La Crescenta

More info (especially on parking): https://hikingguy.com/hiking-trails/best-la-hikes/hike-mt-lukens-from-deukmejian-wilderness-park/