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Briones

Mountain bike trail conditions · Bay Area, CA 37.917° N  122.127° W   689 FT Verified

DUSTY: Rideable, very dry

Mon 7am Conditions turn Prime.

Recent rain
No measurable rain in the past week
Today
72°Ffog or low cloud
  • Thu 9/10, no measurable rain, modeled conditions: DUSTY
  • Fri 9/11, no measurable rain, modeled conditions: DUSTY
  • Sat 9/12, no measurable rain, modeled conditions: DUSTY
  • Sun 9/13, no measurable rain, modeled conditions: DUSTY
  • Mon 9/14, no measurable rain, modeled conditions: DUSTY
  • Tue 9/15, no measurable rain, modeled conditions: DUSTY
  • Wed 9/16, no measurable rain, modeled conditions: DUSTY
  • Thu 9/17, no measurable rain, modeled conditions: DUSTY
  • Fri 9/18, no measurable rain, modeled conditions: DUSTY
  • Sat 9/19, no measurable rain, modeled conditions: DUSTY
  • Today, Sun 9/20, no measurable rain, modeled conditions: DUSTY then PRIME
  • Mon 9/21, no measurable rain, modeled conditions: PRIME
  • Tue 9/22, no measurable rain, modeled conditions: PRIME
  • Wed 9/23, no measurable rain, modeled conditions: PRIME then DUSTY
  • Thu 9/24, no measurable rain, modeled conditions: DUSTY, forecast preview, beyond the free window
  • Fri 9/25, no measurable rain, modeled conditions: DUSTY, forecast preview, beyond the free window

Updated Sep 20, 2026, 13:50 UTC. Modeled hourly. Unchanged for 10+ days. Official closures and current trail conditions take priority.

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Is Briones rideable today?

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

Over the tracked history, Briones has been rideable on 10 of the last 10 days (very dry and dusty on 10 of them). Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Briones

Briones is a mountain bike trail network in Bay Area, CA. The soil is clay and holds water. Heavy tree cover can slow drying after rain. The terrain averages a 7.3° slope at 689 ft and mainly faces ESE. Its rolling slopes drain steadily. Trails here include Spengler Trail, Lafayette Ridge Trail and Buckeye Ranch Trail.

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.

CanopyDense 64%

Heavy tree cover shades the soil and blocks wind, so these trails dry slowly and can hold morning damp even after dry days.

TerrainSheds water

Water runs off this terrain rather than pooling, which helps the surface dry out after rain.

FAQ

Can you ride Briones right now?

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

Is Briones 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 Briones?

Briones 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 Briones take to dry after rain?

Briones can need several days to dry after meaningful rain. Its terrain sheds water, which speeds drying. Heavy tree cover slows drying further.

Can you ride Briones 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 Briones get snow in winter?

Rarely. Briones sits low and mild enough (around 689 ft) that snow seldom affects riding; conditions are driven by rain and drying. Loam still flags FROZEN on the rare freeze.

What trails are at Briones?

Trails at Briones include Spengler Trail, Lafayette Ridge Trail, Buckeye Ranch Trail, Blue Oak Trail and Sunrise Trail. This is a partial list. The condition estimate covers the whole network, so individual trails may differ.

What's the terrain and elevation like at Briones?

Briones sits at roughly 689 feet, faces mostly ESE, and averages a 7.3° grade with about 64% tree cover. It is exposed to morning sun, and the rolling terrain drains steadily.

When is the best time of year to ride Briones?

Snow rarely affects Briones. 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 · modeled
Drainage
Sheds waterdries quickly
Tree cover
64%Dense
Elevation
689 ft
Average grade
7.3°
Predominant aspect
ESE-facing

Named trails

  • Spengler Trail
  • Lafayette Ridge Trail
  • Buckeye Ranch Trail
  • Blue Oak Trail
  • Sunrise Trail

This is a partial trail list. The condition estimate covers the whole network. Trail names from public agency data and © OpenStreetMap contributors.

Around Briones

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