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Chino Hills State Park

Mountain bike trail conditions · Orange County & Inland Empire, CA 33.920° N  117.715° W   1,047 FT Verified

DUSTY: Rideable, very dry

Expect dust and loose corners.

Recent rain
0.4″ of rain, 4d ago
Today
97°Fpartly cloudy

Updated Sep 10, 2026, 21:36 UTC. Modeled hourly. Verdict last changed: Sep 10. Official closures and current trail conditions take priority.

Last 10 daysoldest to newest

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Trail outlook

Is Chino Hills State Park rideable today?

Yes. The live verdict is DUSTY: rideable, but very dry and loose over hardpack. 0.4″ of rain, 4d ago.

0.4″
FORECAST
DUSTY 7d 2026-09-03: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 6d 2026-09-04: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 5d 2026-09-05: 0.00 inches of rain, representative trail outlook DUSTY
CAUTION 4d 2026-09-06: 0.40 inches of rain, representative trail outlook CAUTION
PRIME 3d 2026-09-07: 0.00 inches of rain, representative trail outlook PRIME
PRIME 2d 2026-09-08: 0.00 inches of rain, representative trail outlook PRIME
PRIME 1d 2026-09-09: 0.00 inches of rain, representative trail outlook PRIME
97° DUSTY Today 2026-09-10: 0.00 inches of rain, Partly cloudy, representative trail outlook DUSTY
92° DUSTY FRI 2026-09-11: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook DUSTY
87° DUSTY SAT 2026-09-12: 0.00 inches of forecast rain, Fog or low cloud, representative trail outlook DUSTY
85° DUSTY SUN 2026-09-13: 0.00 inches of forecast rain, Clear, representative trail outlook DUSTY
84° DUSTY MON 2026-09-14: 0.00 inches of forecast rain, Clear, representative trail outlook DUSTY
Modeled rain Forecast rain Above soft threshold (0.5″)
Over the tracked history, Chino Hills State Park has been rideable on 9 of the last 10 days (very dry and dusty on 6 of them), and under a caution advisory on 1. Each daily marker shows the expected daytime condition. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Chino Hills State Park

Chino Hills State Park is a mountain bike trail network in Orange County & Inland Empire, CA. The soil is clay and holds water. With little tree cover, the ground gets plenty of sun and wind. The terrain averages a 4.4° slope at 1,047 ft and mainly faces ENE. Its gentle slopes drain slowly, so low spots can stay soft after rain.

How we check ourselves

How these factors affect drying

SoilClay

Dense clay holds moisture and stays slick the longest. It needs the most drying time before it’s worth riding.

CanopyOpen 0%

Little tree cover means full sun and wind, so these trails are among the fastest to rebound after rain.

TerrainModerate

Terrain here drains at a moderate pace. It neither sheds nor holds water strongly.

FAQ

Can you ride Chino Hills State Park right now?

The current estimate for Chino Hills State Park is DUSTY: rideable, very dry. Rideable, but very dry. Expect dust and loose corners. 0.4″ of rain, 4d ago.

Is Chino Hills State Park muddy right now?

Loam currently estimates dry conditions (DUSTY). Clay soil can stay wet for several days. 0.4″ of rain, 4d ago.

What is the soil and trail surface like at Chino Hills State Park?

Chino Hills State Park sits on clay soil that holds water. Dense clay holds moisture and stays slick the longest. It needs the most drying time before it’s worth riding.

How long does Chino Hills State Park take to dry after rain?

Chino Hills State Park can need several days to dry after meaningful rain. Its terrain drains at a moderate pace.

Can you ride Chino Hills State Park after rain?

Clay soil needs time to dry. Riding it wet can leave lasting ruts. Wait until the surface is firm. Check the current estimate before heading out, and turn back if your tires leave ruts.

Does Chino Hills State Park get snow in winter?

Rarely. Chino Hills State Park sits low and mild enough (around 1,047 ft) that snow seldom affects riding; conditions are driven by rain and drying. Loam still flags FROZEN on the rare freeze.

What's the terrain and elevation like at Chino Hills State Park?

Chino Hills State Park sits at roughly 1,047 feet, faces mostly ENE, and averages a 4.4° grade with about 0% tree cover. It is exposed to morning sun, and the gentle terrain leaves low spots soft after storms.

When is the best time of year to ride Chino Hills State Park?

Snow rarely affects Chino Hills State Park. Check recent rain and allow time for the ground to dry. The live verdict above reflects today.

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Network profile

Network profile

Soil
Clayholds water
Drainage
Moderateeven drying
Tree cover
0%Open
Elevation
1,047 ft
Average grade
4.4°
Predominant aspect
ENE-facing

Around Chino Hills State Park

Nearby networks

Bonelli Regional Park12 MI Fullerton Loop13 MI Claremont Hills Wilderness Park15 MI Crystal Cove State Park24 MI Aliso & Wood Canyons25 MI

Every Orange County & Inland Empire network →

Trail stewards

Trail work here is done by Friends of Chino Hills State Park. Support your local builders.