LoamLoam App StoreGoogle Play

Pearson-Arastradero Preserve

Mountain bike trail conditions · Bay Area, CA 37.375° N  122.182° W   486 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
No measurable rain in the past week
Today
74°Ffog or low cloud
  • Thu 9/10, no measurable rain, modeled conditions: PRIME
  • Fri 9/11, no measurable rain, modeled conditions: PRIME
  • Sat 9/12, no measurable rain, modeled conditions: PRIME
  • Sun 9/13, no measurable rain, modeled conditions: PRIME
  • Mon 9/14, no measurable rain, modeled conditions: PRIME
  • Tue 9/15, no measurable rain, modeled conditions: PRIME
  • Wed 9/16, no measurable rain, modeled conditions: PRIME
  • Thu 9/17, no measurable rain, modeled conditions: 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, 12:49 UTC. Modeled hourly. Unchanged for 10+ days. Official closures and current trail conditions take priority.

Watch conditions at Pearson-Arastradero Preserve

Watch one network free. No account needed.

After installing, search for Pearson-Arastradero Preserve and turn on alerts.

Already have Loam? Open this trail

Download on the App StoreGet it on Google Play

Is Pearson-Arastradero Preserve rideable today?

Yes. The live verdict is PRIME, rideable now. No measurable rain in the past week.

Over the tracked history, Pearson-Arastradero Preserve has been rideable on 10 of the last 10 days. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Pearson-Arastradero Preserve

Pearson-Arastradero Preserve is a mountain bike trail network in Bay Area, CA. The soil is sandy and drains fast. The terrain averages a 3.8° slope at 486 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

SoilSandy

Sandy, coarse soil sheds water fast. These trails are among the quickest to recover after rain.

CanopyPartial 44%

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

TerrainModerate

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

FAQ

Can you ride Pearson-Arastradero Preserve right now?

The current estimate for Pearson-Arastradero Preserve is PRIME: rideable now. No significant rain in the forecast. No measurable rain in the past week.

Is Pearson-Arastradero Preserve muddy right now?

Loam currently estimates dry conditions (PRIME). Sandy soil usually drains quickly. No measurable rain in the past week.

What is the soil and trail surface like at Pearson-Arastradero Preserve?

Pearson-Arastradero Preserve sits on sandy soil that drains fast. Sandy, coarse soil sheds water fast. These trails are among the quickest to recover after rain.

How long does Pearson-Arastradero Preserve take to dry after rain?

Pearson-Arastradero Preserve usually needs only a few hours to recover after light rain. Its terrain drains at a moderate pace.

Can you ride Pearson-Arastradero Preserve after rain?

Sandy soil drains quickly, though heavier rain can leave soft spots. Wait until the surface is firm. Check the current estimate before heading out, and turn back if your tires leave ruts.

Does Pearson-Arastradero Preserve get snow in winter?

Rarely. Pearson-Arastradero Preserve sits low and mild enough (around 486 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 Pearson-Arastradero Preserve?

Pearson-Arastradero Preserve sits at roughly 486 feet, faces mostly NNE, and averages a 3.8° grade with about 44% 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 Pearson-Arastradero Preserve?

Snow rarely affects Pearson-Arastradero Preserve. 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.

Trail stewards, clubs and bike shops: Put live conditions on your site with a free badge that updates itself. Get the embed code →
Appearance

Loam is a rider app. The badge helps riders find it, so standard embeds are free. No account required. The snippet includes a short text link to the live conditions page; please keep it so riders can open full details. Need several networks? Build a free trail conditions widget. How Loam works and why it is free.

Network profile

Network profile

Soil
Sandydrains fast
Drainage
Moderateeven drying
Tree cover
44%Partial
Elevation
486 ft
Average grade
3.8°
Predominant aspect
NNE-facing

Around Pearson-Arastradero Preserve

Nearby networks

El Corte de Madera8 MI Waterdog Lake12 MI Skyline Watershed Ridge Trail13 MI Big Basin Redwoods State Park14 MI Lake Cunningham Bike Park21 MI

Every Bay Area network →