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Briones

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

DRY: Rideable

No significant rain in the forecast.

Recent rain
0.4″ of rain, 1d ago
Today
71°Fcloudy
  • Mon 10/26, no measurable rain, daily high 68 degrees Fahrenheit, modeled conditions: DRY
  • Tue 10/27, no measurable rain, daily high 66 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/28, no measurable rain, daily high 69 degrees Fahrenheit, modeled conditions: DRY
  • Thu 10/29, no measurable rain, daily high 67 degrees Fahrenheit, modeled conditions: DRY
  • Fri 10/30, no measurable rain, daily high 67 degrees Fahrenheit, modeled conditions: DRY
  • Sat 10/31, no measurable rain, daily high 62 degrees Fahrenheit, modeled conditions: DRY
  • Sun 11/1, no measurable rain, daily high 65 degrees Fahrenheit, modeled conditions: DRY
  • Mon 11/2, no measurable rain, daily high 65 degrees Fahrenheit, modeled conditions: DRY
  • Tue 11/3, 0.37 inches of rain, daily high 61 degrees Fahrenheit, modeled conditions: DRY then CAUTION then DRY then STAY OFF
  • Wed 11/4, no measurable rain, daily high 68 degrees Fahrenheit, modeled conditions: STAY OFF then CAUTION then DRY
  • Today, Thu 11/5, no measurable rain, daily high 71 degrees Fahrenheit, modeled conditions: DRY
  • Fri 11/6, no measurable rain, daily high 74 degrees Fahrenheit, modeled conditions: DRY
  • Sat 11/7, no measurable rain, daily high 75 degrees Fahrenheit, modeled conditions: DRY
  • Sun 11/8, no measurable rain, daily high 73 degrees Fahrenheit, modeled conditions: DRY
  • Mon 11/9, no measurable rain, daily high 73 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
  • Tue 11/10, no measurable rain, daily high 74 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
Updated

Updated Thursday, November 5th, 2026 at 12:46 UTC. Verdict last changed: Thursday, November 5th. Official closures and current trail conditions take priority.

Modeled hourly. Closures and local conditions take priority.

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Is Briones rideable today?

Yes. The live verdict is DRY, rideable now. 0.4″ of rain, 1d ago.

CHANGED
Wednesday, November 4th at 10am
Dried back to DRY.
Wednesday, November 4th at 4am
Dried back to CAUTION.
Tuesday, November 3rd at 5pm
Rain moved in. Verdict dropped to STAY OFF.
Over the tracked history, Briones has been rideable on 9 of the last 10 days, and under a caution advisory on 1. 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. Soil data at the sampled location is classified as clay. Dense tree cover can reduce sun and wind exposure, slowing drying. Terrain data indicates an elevation of about 689 ft, an average terrain slope of 7.3° and a predominant ESE-facing aspect. Terrain slope does not measure the trail tread or its drainage features. Trails here include Spengler Trail, Lafayette Ridge Trail and Buckeye Ranch Trail. Loam models conditions across the network; individual trails and constructed surfaces can differ from these environmental inputs. Official closures and conditions on the ground take priority.

How these factors affect drying

SoilClay

Clay can retain moisture and become slick when wet. Wait for a firm trail surface and respect posted closures. The model uses surveyed water-retention values, not measured trail recovery times.

CanopyDense 64%

Dense tree cover can reduce sunlight and wind at ground level, slowing drying. Its effect depends on weather and local openings.

TerrainSteep

Steeper terrain can encourage runoff. Terrain slope does not measure the trail tread or its drainage features.

FAQ

Can you ride Briones right now?

The current estimate for Briones is DRY: rideable. Rideable now. No significant rain in the forecast. 0.4″ of rain, 1d ago.

Is Briones muddy right now?

Loam currently estimates dry conditions (DRY). Clay can retain moisture, but soil type alone does not establish drying time. 0.4″ of rain, 1d ago.

What is the soil and trail surface like at Briones?

The soil data at the sampled location is classified as clay. This describes an environmental input, not a survey of every trail surface.

How long does Briones take to dry after rain?

Briones has no fixed drying time. Rainfall, soil moisture, shade and the weather that follows all matter. Check the current estimate and wait until the trail surface is firm.

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.

What does a frozen condition mean at Briones?

FROZEN means Loam estimates snow cover or frozen ground. It does not establish that riding is allowed or that every trail is frozen. Check posted winter access rules and watch for soft ground as temperatures rise.

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?

Terrain data indicates an elevation of about 689 ft, an average terrain slope of 7.3° and a predominant ESE-facing aspect. Terrain slope does not measure the trail tread or its drainage features.

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Network profile

Network profile

Soil
Claydrainage input
Terrain
Steepterrain slope
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