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Tamarancho

Mountain bike trail conditions · Bay Area, CA 37.871° N  122.556° W   764 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
0.1″ of rain, 3d ago
Today
64°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 then PRIME
  • Thu 9/17, 0.07 inches of rain, modeled conditions: PRIME then CAUTION then PRIME
  • Fri 9/18, no measurable rain, modeled conditions: PRIME
  • Sat 9/19, no measurable rain, modeled conditions: PRIME
  • Today, Sun 9/20, no measurable rain, modeled conditions: 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
  • Thu 9/24, no measurable rain, modeled conditions: PRIME, forecast preview, beyond the free window
  • Fri 9/25, no measurable rain, modeled conditions: PRIME, forecast preview, beyond the free window

Updated Sep 20, 2026, 14:19 UTC. Modeled hourly. Verdict last changed: Sep 17. Official closures and current trail conditions take priority.

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Is Tamarancho rideable today?

Yes. The live verdict is PRIME, rideable now. 0.1″ of rain, 3d ago.

CHANGED
Thu 176pm
Dried back to PRIME.
Thu 174pm
Rain moved in. Verdict dropped to CAUTION.
Thu 174am
Rain moved in. Verdict dropped to PRIME.
Over the tracked history, Tamarancho has been rideable on 10 of the last 10 days (very dry and dusty on 6 of them). Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Tamarancho

Tamarancho is a mountain bike trail network in Bay Area, CA. The soil is loam and drains well. The terrain averages a 10° slope at 764 ft and mainly faces WNW. Its rolling slopes drain steadily. Trails here include Miwok Trail, Dias Ridge Trail and Coyote Ridge Trail.

How we check ourselves

How these factors affect drying

SoilLoam

Loam balances drainage with water retention, so it typically takes a day or two to dry after meaningful rain.

CanopyPartial 47%

A mix of sun and shade. Conditions vary across the network, with open sections drying faster than covered ones.

TerrainSheds water

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

FAQ

Can you ride Tamarancho right now?

The current estimate for Tamarancho is PRIME: rideable now. No significant rain in the forecast. 0.1″ of rain, 3d ago.

Is Tamarancho muddy right now?

Loam currently estimates dry conditions (PRIME). 0.1″ of rain, 3d ago.

What is the soil and trail surface like at Tamarancho?

Tamarancho sits on loam soil that drains well. Loam balances drainage with water retention, so it typically takes a day or two to dry after meaningful rain.

How long does Tamarancho take to dry after rain?

Tamarancho usually needs about a day or two to dry after meaningful rain. Its terrain sheds water, which speeds drying.

Can you ride Tamarancho after rain?

Drying time depends on how much rain fell and the weather that follows. Wait until the surface is firm. Check the current estimate before heading out, and turn back if your tires leave ruts.

Does Tamarancho get snow in winter?

Rarely. Tamarancho sits low and mild enough (around 764 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 Tamarancho?

Trails at Tamarancho include Miwok Trail, Dias Ridge Trail, Camino del Canon, Coyote Ridge Trail and Glenn Crack. 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 Tamarancho?

Tamarancho sits at roughly 764 feet, faces mostly WNW, and averages a 10° grade with about 47% tree cover. It is exposed to afternoon sun, and the rolling terrain drains steadily.

When is the best time of year to ride Tamarancho?

Snow rarely affects Tamarancho. 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
Loamdrains well
Drainage
Sheds waterdries quickly
Tree cover
47%Partial
Elevation
764 ft
Average grade
10°
Predominant aspect
WNW-facing

Named trails

  • Miwok Trail
  • Dias Ridge Trail
  • Camino del Canon
  • Coyote Ridge Trail
  • Glenn Crack

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

Around Tamarancho

Nearby networks

Mt. Tamalpais (Marin)3 MI China Camp10 MI Bolinas Ridge14 MI Wildcat Canyon15 MI Tilden17 MI

Every Bay Area network →

Trail stewards

Trail work here is done by Friends of Tamarancho. Support your local builders.