LoamLoam App StoreGoogle Play

Annadel State Park

Mountain bike trail conditions · Bay Area, CA 38.426° N  122.631° W   771 FT Verified

DRY: Rideable

Thursday, October 22nd at 5pm Conditions turn Caution.

Recent rain
No measurable rain in the past week
Today
61°Flight rain
  • Mon 10/12, no measurable rain, daily high 69 degrees Fahrenheit, modeled conditions: DUSTY
  • Tue 10/13, no measurable rain, daily high 78 degrees Fahrenheit, modeled conditions: DUSTY
  • Wed 10/14, no measurable rain, daily high 80 degrees Fahrenheit, modeled conditions: DUSTY
  • Thu 10/15, no measurable rain, daily high 92 degrees Fahrenheit, modeled conditions: DUSTY
  • Fri 10/16, no measurable rain, daily high 90 degrees Fahrenheit, modeled conditions: DUSTY
  • Sat 10/17, no measurable rain, daily high 88 degrees Fahrenheit, modeled conditions: DUSTY
  • Sun 10/18, no measurable rain, daily high 71 degrees Fahrenheit, modeled conditions: DUSTY
  • Mon 10/19, no measurable rain, daily high 63 degrees Fahrenheit, modeled conditions: DUSTY
  • Tue 10/20, no measurable rain, daily high 71 degrees Fahrenheit, modeled conditions: DUSTY
  • Wed 10/21, no measurable rain, daily high 70 degrees Fahrenheit, modeled conditions: DUSTY
  • Today, Thu 10/22, 0.11 inches of rain, daily high 61 degrees Fahrenheit, modeled conditions: DUSTY then DRY then CAUTION then DRY
  • Fri 10/23, no measurable rain, daily high 71 degrees Fahrenheit, modeled conditions: DRY
  • Sat 10/24, no measurable rain, daily high 80 degrees Fahrenheit, modeled conditions: DRY
  • Sun 10/25, no measurable rain, daily high 77 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/26, no measurable rain, daily high 74 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
  • Tue 10/27, no measurable rain, daily high 69 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
Updated

Updated Thursday, October 22nd, 2026 at 20:16 UTC. Verdict last changed: Thursday, October 22nd. Official closures and current trail conditions take priority.

Modeled hourly. Closures and local conditions take priority.

Watch Annadel State Park for free

Download Loam for free and get trail-condition alerts. No account needed.

After installing, search for Annadel State Park and turn on alerts.

Already have Loam? Open this trail

Download on the App StoreGet it on Google Play

Is Annadel State Park rideable today?

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

CHANGED
Thursday, October 22nd at 1am
Rain moved in. Verdict dropped to DRY.
Over the tracked history, Annadel State Park has been rideable on 10 of the last 10 days (very dry and dusty on 9 of them). Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Annadel State Park

Annadel State Park is a mountain bike trail network in Bay Area, CA. Soil data at the sampled location is classified as gravelly clay. Terrain data indicates an elevation of about 771 ft, an average terrain slope of 7.2° and a predominant NNW-facing aspect. Terrain slope does not measure the trail tread or its drainage features. 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 we check ourselves

How these factors affect drying

SoilGravelly clay

The soil data includes about 27% rock fragments. The model uses this to adjust drainage; it does not measure how quickly every trail section dries. The model uses surveyed water-retention values, not measured trail recovery times.

CanopyPartial 54%

Partial tree cover suggests a mix of sun and shade. Local exposure and surface conditions can vary across the network.

TerrainSteep

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

FAQ

Can you ride Annadel State Park right now?

The current estimate for Annadel State Park is DRY: rideable. Rideable now. No significant rain in the forecast. No measurable rain in the past week.

Is Annadel State Park muddy right now?

Loam currently estimates dry conditions (DRY). Clay can retain moisture, but soil type alone does not establish drying time. No measurable rain in the past week.

What is the soil and trail surface like at Annadel State Park?

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

How long does Annadel State Park take to dry after rain?

Annadel State Park 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 Annadel State 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.

What does a frozen condition mean at Annadel State Park?

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's the terrain and elevation like at Annadel State Park?

Terrain data indicates an elevation of about 771 ft, an average terrain slope of 7.2° and a predominant NNW-facing aspect. Terrain slope does not measure the trail tread or its drainage features.

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
Gravelly claydrainage input
Terrain
Steepterrain slope
Tree cover
54%Partial
Elevation
771 ft
Average grade
7.2°
Predominant aspect
NNW-facing

Around Annadel State Park

Nearby networks

Mount Burdell21 MI Lynch Canyon Open Space28 MI Boggs Mountain29 MI Bolinas Ridge29 MI Rockville Hills Regional Park29 MI

Every Bay Area network →