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Calero County Park

Mountain bike trail conditions · Bay Area, CA 37.193° N  121.808° W   417 FT Verified

DUSTY: Rideable, very dry

Expect dust and loose corners.

Recent rain
No measurable rain in the past week
Today
83°Fclear

Updated Sep 13, 2026, 05:42 UTC. Modeled hourly. Unchanged for 10+ days. Official closures and current trail conditions take priority.

Last 10 daysoldest to newest

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Trail outlook

Is Calero County Park rideable today?

Yes. The live verdict is DUSTY: rideable, but very dry and loose over hardpack. No measurable rain in the past week.

FORECAST
DUSTY 7d 2026-09-05: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 6d 2026-09-06: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 5d 2026-09-07: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 4d 2026-09-08: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 3d 2026-09-09: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 2d 2026-09-10: 0.00 inches of rain, representative trail outlook DUSTY
DUSTY 1d 2026-09-11: 0.00 inches of rain, representative trail outlook DUSTY
83° DUSTY Today 2026-09-12: 0.00 inches of rain, Clear, representative trail outlook DUSTY
74° DUSTY SUN 2026-09-13: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook DUSTY
84° DUSTY MON 2026-09-14: 0.00 inches of forecast rain, Cloudy, representative trail outlook DUSTY
91° DUSTY TUE 2026-09-15: 0.00 inches of forecast rain, Clear, representative trail outlook DUSTY
91° DUSTY WED 2026-09-16: 0.00 inches of forecast rain, Clear, representative trail outlook DUSTY
No measurable rain in the window. Over the tracked history, Calero County Park has been rideable on 10 of the last 10 days (very dry and dusty on 10 of them). Each daily marker shows the expected daytime condition. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Calero County Park

Calero County Park is a mountain bike trail network in Bay Area, CA. The soil is clay and holds water. With little tree cover, the ground gets plenty of sun and wind. The terrain averages a 3.8° slope at 417 ft and mainly faces NNE. 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. The soil type here is classified, but the exact drying speed is modeled from that classification rather than measured directly at this spot.

CanopyOpen 6%

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 Calero County Park right now?

The current estimate for Calero County Park is DUSTY: rideable, very dry. Rideable, but very dry. Expect dust and loose corners. No measurable rain in the past week.

Is Calero County Park muddy right now?

Loam currently estimates dry conditions (DUSTY). Clay soil can stay wet for several days. No measurable rain in the past week.

What is the soil and trail surface like at Calero County Park?

Calero County 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. The soil type here is classified, but the exact drying speed is modeled from that classification rather than measured directly at this spot.

How long does Calero County Park take to dry after rain?

Calero County Park can need several days to dry after meaningful rain. Its terrain drains at a moderate pace.

Can you ride Calero County 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 Calero County Park get snow in winter?

Rarely. Calero County Park sits low and mild enough (around 417 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 Calero County Park?

Calero County Park sits at roughly 417 feet, faces mostly NNE, and averages a 3.8° grade with about 6% tree cover. It is slower to dry where it faces north, and the gentle terrain leaves low spots soft after storms.

When is the best time of year to ride Calero County Park?

Snow rarely affects Calero County Park. Check recent rain and allow time for the ground to dry. Its shady aspect means it needs longer after storms than sunnier networks nearby. The live verdict above reflects today.

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Network profile

Network profile

Soil
Clayholds water · modeled
Drainage
Moderateeven drying
Tree cover
6%Open
Elevation
417 ft
Average grade
3.8°
Predominant aspect
NNE-facing

Around Calero County Park

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