Mount Thom and Tongva Peak Loop is a 7.1 mile moderately trafficked loop trail located near Glendale, California that features beautiful wild flowers. The trail is rated as difficult and primarily used for hiking and nature trips.
Perhaps one of the toughest hikes in the San Fernando Valley, this trail can be used as a training course for harder hikes (such as Mt. Whitney or Cactus-to-Clouds). The sharp elevation gain is recommended only for experienced hikers. For those who endure the challenge, you will be rewarded with some of the best views in the valley. Be sure to bring plenty of water...and even more willpower.
If you're looking for a good incline workout, this is a great option. Light traffic and beautiful scenery. Only downside is your in the sun the whole time so Around sun down is the best time to go.