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Summitridge Park
4.6 ★★★★★ 279 Google reviews · Running trail in Diamond Bar, California · Posted hours
Runner's snapshot
- Surface
- Not reported
- Loop distance
- Not reported
- Shape
- Loop
- Shade
- Tree cover
- Access
- Posted hours
Confirmed from Summitridge Park's own listing, the park or land manager's website, and runner reviews. Blank cells mean we could not verify that fact — we would rather say "not reported" than invent one. There is no Easy / Moderate / Hard rating on this page on purpose: a one-word difficulty score tells you nothing about whether a trail suits your run. Surface, distance, shade and hours do.
Community park providing open grassy lawns, picnic space & a hillside hiking trail with city views.
What runners say about Summitridge Park
“There are clean restrooms in the community center.”
“For a memorable and exhilarating excursion, hike the park’s scenic trail.”
“It does get very hot on most summer days because there's limited shade, so aim to hike early in the morning or towards sunset.”
Want to escape the hustle and bustle of city life? Spend a few hours exploring Summitridge Park. With spacious, verdant grounds, fresh air and a laid-back vibe, the park is a relaxing respite for those who want to escape SoCal’s restless energy. For a memorable and exhilarating excursion, hike the park’s scenic trail.
Love this park! Almost always clean. Great workout on the trails. Highly recommend wearing trail shoes, there's some loose rocks on the steep hills. Pretty nice views when the sun goes down too.
It is great trail located in diamond bar. I love it for all seasons view. I love spring most for all green hills and wild flowers.
Amazing sunsets, trail is beautiful, I wouldn't take my dog. Last time their was a the biggest and only rattle snake I ever encountered. I love the flag pole, my dad was a veteran, I feel his spirit when I'm there.
Trail conditions & character
“Diamond Bar Loop / Ridge Route + Canyon + Grand View Length & Difficulty Approximately 1.”
“While the trail is only around three miles long, it’s a nice and mildly challenging adventure with some steep inclines.”
“It does get very hot on most summer days because there's limited shade, so aim to hike early in the morning or towards sunset.”
“Lots of shady parking, dog bags at the trail head and a nice walk around the grounds but hike is exposed so hot hot!”
“Diamond Bar Loop / Ridge Route + Canyon + Grand View Length & Difficulty Approximately 1.”
“There are however no restrooms or water fountains outside.”
“There are however no restrooms or water fountains outside.”
Plan your run at Summitridge Park
The practical stuff
- AccessPosted hours — posted hours below; park gates sometimes close earlier than the listing says
- DistanceNot reported. Trail systems often quote total path mileage rather than a single loop, so measure the route you actually want before you drive out.
- ShadeRunners describe real tree cover here — it makes a summer afternoon workable
- LightingRunners report lights on the path — useful for pre-dawn and after-work miles. Lighting and opening hours are separate things, so check both.
- At the trailheadparking, restrooms, water — reported by runners
- Websitediamondbarca.gov
- Phone+1 909-839-7000
Hours
| Monday | 6 am–9 pm |
| Tuesday | 6 am–9 pm |
| Wednesday | 6 am–9 pm |
| Thursday | 6 am–9 pm |
| Friday | 6 am–9 pm |
| Saturday | 6 am–9 pm |
| Sunday | 6 am–9 pm |
Running trails near Diamond Bar
Other trails within easy driving distance — useful when this one is flooded, gated, or just not the run you had in mind today.
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