Diamond of a Hike

Hike Diamond Bar Loop in Los Angeles County

The 1.5-mile Diamond Bar Loop might be located in the center of Diamond Bar, but once you get out on the trail it’s easy to forget you’re in the thick of a busy place.

The trail can be hiked in either direction, and there is no benefit to choosing one way over the other, though from the parking lot it’s easier to see the clockwise loop trail entrance (near the gazebo and signage in the far corner of the lot).

As the trail leaves the literal Diamond Bar City Center in Summitridge Park, it quickly drops down into the coast live oak woodland community of the canyon floor, with towering oak and sycamore trees. It passes through the bottom of the canyon briefly before beginning the climb back up along hillsides covered in cactus, mustard, sage, deer grass, and toyon (also known as California holly due to their similar appearance).

Overall the trail gains 337 feet in elevation but with frequent breaks to enjoy the setting sun, it doesn’t feel all that bad. Eventually the trail will hit a T-intersection with the Canyon Loop Trail, where you’ll head right, continuing your clockwise loop journey. Before long you’ll see a fork in the trail with the right fork heading towards the Diamond Bar Center. Take that fork and follow it all the way back to the parking lot! {NOTE: You will be in a different area of the parking lot when you finish, so just follow the path near the building to get back to where you started.} For the best sunset experience, head clockwise on the trail and aim to be on the second half of your hike by the official sunset time, that way you’ll be on the high ground during the peak colors of sunset. The parking lot closes 30 minutes after sunset, so mind your time!

The Diamond Bar Loop Trail is located in Summitridge Park at Diamond City Center. Map. Parking lot closes 30 minutes after sunset, so be sure to time your hike accordingly (on average, this trail takes about 1 hour). Dog-friendly.

Story and photos by Natalie Bates, @wanderwithnatalie

Trending Stories NorCal

View all Stories
  1. Aloha from California

    Say Aloha without leaving California with a 7-mile out-and-back hiking adventure to Lake Aloha in El Dorado National Forest. You can also camp here, a premier place for stargazing.

    View
  2. Sequoia Re-opens Crystal Cave

    Step inside Sequoia & Kings Canyon National Park's hidden world by visiting the newly re-opened Crystal Cave—the only cave in the parks open to the public. Closed for four years, this rare marble karst cavern is welcoming visitors once again, but only through the summer season!

    View
  3. Easiest Best Hike in the World

    Choose the easiest and most view-rewarding hike in Yosemite. Okay, we’ll go first: the combination of hiking to Sentinel Dome and Taft Point. Both of these lookouts are within a couple miles of each other on Glacier Point Road

    View
  4. Hiker in the forest at Mount Sutro in San Francisco

    San Francisco's Middle Earth

    No need to travel to New Zealand to visit Middle Earth. San Francisco’s Mount Sutro Open Space is practically Hobbiton—a hidden “shire” in the middle of the city. Okay, maybe not quite as magical, but still an incredible place to take a hike in city limits.

    View

Trending Stories SoCal

View all Stories
  1. Can't Top This

    San Francisco’s Presidio was already a fantastic place to hang out for the afternoon, a beautiful site within the largest urban national park in the United States (the Golden Gate National Recreation Area). And Presidio Tunnel Tops is like a cherry on top. Make that two cherries on top, with the newly opened (July 2025) Outpost Meadow, a 1.5-acre green space located at Old Mason Street across from the Crissy Field Marsh in the Presidio.

    View
  2. Underground Garden

    Looking to escape the summer heat? Head to Fresno and discover its cool secret: the Forestiere Underground Gardens–an enchanting garden and architecture oasis like no other.

    View
  3. Volcanic Activity

    Northern California is home to one of the most unique ecosystems in the country: Lassen Volcanic National Park. The region features geothermal areas, including the largest dome volcano in the world, Lassen Peak. Hike to the top of this active volcano on a 5-mile out-and-back.  

    View
  4. Oh Ryan

    Sure, it’s those whimsical trees that give Joshua Tree National Park its marquee billing; but this beautiful landscape also has surrounding mountains and its night sky—one of the darkest in Southern California and designated an International Dark Sky Park. Joshua Tree has four allowable stargazing parking lots, and a newly opened haven for spending the night nearby...

    View