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Photo by Jay Mantri on Unsplash
EasyCompacted

Diamond Bar Loop

Diamond Bar, California · Los Angeles County

Diamond Bar Loop is a easy hiking trail near Diamond Bar in Los Angeles County, California.. The surface is compacted. Trail data is sourced from OpenStreetMap.

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34.00118, -117.79944
Open in OpenStreetMap
5-Day Forecast

Weather at Diamond Bar Loop

Live forecast for the trailhead. Use it to pack and time your hike.

Avg High95°F
Avg Low68°F
Peak Rain Chance0%
Humidity48%
UV (avg)8
Air Quality133 · Unhealthy for Sensitive
Today
☀️
Clear
97°/65°
🌬 11mph
6:02 AM7:51 PM
Sun
☀️
Clear
93°/64°
🌬 13mph
6:03 AM7:51 PM
Mon
☀️
Clear
97°/62°
🌬 12mph
6:04 AM7:50 PM
Tue
☀️
Clear
96°/75°
🌬 13mph
6:05 AM7:49 PM
Wed
☀️
Clear
94°/75°
🌬 10mph
6:05 AM7:48 PM

Forecast data © Open-Meteo. Refreshed every 6 hours. Always check the most recent forecast before heading out.

About Diamond Bar Loop

Diamond Bar Loop is a easy hiking trail near Diamond Bar in Los Angeles County, California.. The surface is compacted. Trail data is sourced from OpenStreetMap.

What “Easy” Means

Gentle terrain, well-marked. Suitable for all ages and fitness levels.

Difficulty is derived from OpenStreetMap’s Swiss Alpine Club (SAC) hiking scale, trail visibility, surface, distance, and elevation gain. Always verify current conditions before heading out.

What to Pack & Wear

Personalised to this trail’s length, elevation, difficulty, and the live forecast.

👔 What to Wear

  • 👕
    UPF sun shirt (long sleeve)
    Cooler than direct sun on bare skin.
  • 🩳
    Light shorts/skirt
    Loose-fit, breathable.
  • 🧢
    Wide-brimmed sun hat
    Plus a buff/bandana you can wet for cooling.
  • 🕶
    Polarized sunglasses
    Critical for glare from sun + sand/water.

🎒 What to Pack

  • 💧
    Water
    Bring at least 1L of water; more in heat.
  • 🍫
    High-energy snacks
    A snack for the trail.
  • 🧴
    Sun protection (UV 8)
    SPF 50+ sunscreen, lip balm w/ SPF, sunglasses, sun hat.
  • 🩹
    First-aid kit
    Blister patches, ibuprofen, tape, antiseptic wipes.
  • 🗺
    Offline map
    Download your route in advance via Gaia, Caltopo, or OSM-based apps.

Recommendations adapt to the current forecast + trail stats. Use them as a starting point — local conditions, your experience, and the time of day you start all matter.

Trail Safety in California

Trail conditions in California change with weather, season, and fire activity. Closures, washouts, and rerouting are common. Before heading out:

  • Check with the land manager for current conditions and closures
  • Tell someone your plan and expected return time
  • Know your turn-around limits — conditions can change fast
  • Carry the 10 essentials: water, food, navigation, first aid, light, fire, shelter, knife, sun protection, extra clothes

Frequently Asked Questions

How hard is Diamond Bar Loop?

Diamond Bar Loop is rated Easy. Suitable for most hikers including families.

Can I ride a bike on Diamond Bar Loop?

No — this trail is closed to bicycles.

Are horses allowed on Diamond Bar Loop?

No — this trail is closed to horses.

What is the trail surface on Diamond Bar Loop?

The surface is compacted. Plan footwear accordingly.

When is the best time to hike Diamond Bar Loop?

California has trail conditions that vary by season. Spring and fall usually offer the best mix of temperature and trail conditions. Check the 5-day forecast above for current outlook. Always verify trail status (closures, washouts, fire restrictions) with the local land manager before going.