Go Steep

Hike a short but hearty loop in Summitridge Park at Diamond Bar

Whether you’re looking for an intense workout or a moderate one, Steep Canyon Trail in Diamond Bar has you covered. This 1.5-mile loop in Summitridge Park can be either a steep climb or a gradual incline up the 416 feet of elevation gain. It just depends on which direction you take the loop.

Either way, the trail starts out with a solid leg-burner: stairs. At the top of the staircase choose to go up the Steep Canyon Trail to your left (clockwise loop) or take the Canyon Loop spur to the right (counterclockwise loop). Heading clockwise is 0.6 mile of incline, except for one part where the trail descends and rises sharply, passing through a little ravine for an extra dose of leg-burning exercise.

There are several benches for catching your breath and admiring the view of the surrounding cities, where palm trees sit in the foreground and the snowy San Gabriel Mountains in the distance are a quintessentially Southern California vista. Back up on top of the hill, follow the Diamond Bar Center Trail for around 200 yards until you see the Canyon Loop Trail, which will finish your loop and bring you back to the top of the stairs.

This stretch is a nice treat after conquering the Steep Canyon Trail, with lots of shade from oak and sycamore trees and a moderately graded downhill slope. For something slightly easier, head counterclockwise at the top of the stairs and do the canyon first, which spreads the incline over 0.8 mile. It’s a gentler climb, but be cautious on those steep downhills because they can get slippery.

Steep Canyon Trail is located in Summitridge Park in Diamond Bar. Street parking only. Open from 30 minutes before sunrise to 30 minutes after sunset. Dog friendly!

Story and photos by Natalie Bates, @wanderwithnatalie

Trending Stories NorCal

View all Stories
  1. Keough's Hot Springs

    Soaking Up History

    When you slide into the soothing water of Keough’s Hot Springs, you’re bathing in a piece of Owens Valley history.

    View
  2. woman hiking Buck Gulch Falls Novato

    Buck Wild!

    Tucked back beyond the residential ranch-style homes and golf courses of Novato in the North Bay is a wild and wondrous 30-foot waterfall that springs to life in the rainy season. Buck Gulch Falls in Novato’s Ignacio Valley Preserve is in peak flow right now, and it’s a short and Middle-earthy hike to reach it.

    View
  3. Grover Hot Springs

    State Park Soaker

    Set in an alpine meadow at 6,000 feet and surrounded by the 10,000-foot granite peaks of the Sierra, Grover Hot Springs State Park—just outside the town of Markleeville—has its very own hot springs.

    View
  4. Hike to New Lights

    For an enlightening late-day hike, catch the San Francisco skyline at sunset from high atop Ring Mountain in Tiburon. This 2-mile (round-trip) hike to Turtle Rock is a perfect late afternoon wander.

    View

Trending Stories SoCal

View all Stories
  1. Redding Ironman Whiskeytown lake
    Sponsored

    New Year, New Goal: IRONMAN 70.3 Northern California

    2026 is off and running! And swimming. And biking. Don't get left behind! Commit to one of the upcoming year’s most exciting endurance events—IRONMAN 70.3 Northern California in Redding.

    View
  2. Woman swimming in Carson Hotsprings natural thermal pool

    Hot Springs, Naturally

    Thermal spring waters are famous for their curative, relaxing elements, and Reno Tahoe is filled with them! Sink into these amazing thermal respites for a wellness super soak.

    View
  3. O Enchanted Night!

    Prepare to be mesmerized! Holiday-season nights in Descanso Gardens are a magical interplay of lights and natural beauty that dazzle as you stroll through the Enchanted Forest of L

    View
  4. Hikers sitting on a large rock slab next to Three Sisters Falls in Cleveland National Forest Southern California near Julian

    Three Sisters

    Good things come in threes at this hike to a lovely trio-tiered waterfall in Cleveland National Forest. The 4.25-mile out-and-back hike rambles among rolling hills, with rocky mountain views as switchbacks take you down to a lush canyon and the falls.

    View