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Joaquin Miller

Mountain bike trail conditions · Bay Area, CA 37.815° N  122.187° W   1,293 FT

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
No measurable rain in the past week
Today
69°Ffog or low cloud
Last 10 daysoldest to newest

Updated Aug 21, 2026, 00:00 UTC. Modeled hourly. Official closures and current trail conditions take priority.

Trail outlook

7 days back · 4 ahead
FORECAST
PRIME 7d 2026-08-13: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-08-14: 0.00 inches of rain, representative trail outlook PRIME
PRIME 5d 2026-08-15: 0.00 inches of rain, representative trail outlook PRIME
PRIME 4d 2026-08-16: 0.00 inches of rain, representative trail outlook PRIME
PRIME 3d 2026-08-17: 0.00 inches of rain, representative trail outlook PRIME
PRIME 2d 2026-08-18: 0.00 inches of rain, representative trail outlook PRIME
PRIME 1d 2026-08-19: 0.00 inches of rain, representative trail outlook PRIME
69° PRIME Today 2026-08-20: 0.00 inches of rain, Fog or low cloud, representative trail outlook PRIME
61° PRIME FRI 2026-08-21: 0.00 inches of forecast rain, Fog or low cloud, representative trail outlook PRIME
75° PRIME SAT 2026-08-22: 0.00 inches of forecast rain, Fog or low cloud, representative trail outlook PRIME
78° PRIME SUN 2026-08-23: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook PRIME
70° PRIME MON 2026-08-24: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
No measurable rain in the window. Over the tracked history, Joaquin Miller has been rideable on 10 of the last 10 days. Daily trail markers are representative daytime outlooks. Weather is one input. The rideability verdict also accounts for soil, terrain, canopy, and drying time.
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Why Joaquin Miller dries this way

Terrain & soil

Joaquin Miller is a mountain bike network in the Bay Area region of CA, riding on loam soil that drains well over terrain that sheds water and dries quickly. Heavy tree cover holds the damp in, so it stays wet longer than the sky overhead would suggest. What really sets the timing here is how quickly that ground gives back a firm, dry surface, not what the day’s forecast says. The SW-facing aspect gets its strongest sun in the afternoon, so morning laps can stay tacky after overnight moisture, and the rolling terrain, about a 9° average grade at 1,293 ft, drains steadily rather than pooling. Named trails in this network include Sinawik Loop, Castle Park Trail and Bridgeview Trail.

Network profile

Soil
Loamdrains well
Drainage
Sheds waterdries quickly
Tree cover
65%Dense
Elevation
1,293 ft
Average grade
Predominant aspect
SW-facing
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.

CanopyDense 65%

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.

Around Joaquin Miller

Named trails

  • Sunset Loop
  • Sinawik Loop
  • Castle Park Trail
  • Bridgeview Trail
  • Cinderella Trail

Some of the named trails our map data covers here, not a complete list; one verdict covers the whole network. Trail names from public agency data and © OpenStreetMap contributors.

Trail stewards

Trail work here is done by Bicycle Trails Council of the East Bay. Support your local builders.

FAQ

Common questions
Can you ride Joaquin Miller right now?

As of the latest update, Joaquin Miller is Rideable now (PRIME). No significant rain in the forecast. No measurable rain in the past week.

What is the soil and trail surface like at Joaquin Miller?

Joaquin Miller 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 Joaquin Miller take to dry after rain?

Joaquin Miller usually needs about a day or two to dry after meaningful rain. Its terrain sheds water, which speeds drying. Heavy tree cover slows drying further.

Does Joaquin Miller get snow in winter?

Rarely. Joaquin Miller sits low and mild enough (around 1,293 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 Joaquin Miller?

Named trails at Joaquin Miller include Sunset Loop, Sinawik Loop, Castle Park Trail, Bridgeview Trail and Cinderella Trail. That is a sample of what our map data covers rather than a full inventory, and local trail counts change as networks are built out. Loam models conditions for Joaquin Miller as a whole, so the verdict on this page covers the network rather than scoring each trail separately.

What's the terrain and elevation like at Joaquin Miller?

Joaquin Miller sits at roughly 1,293 feet, faces mostly SW, and averages a 9° grade with about 65% tree cover. That makes it an afternoon-sun network where mornings run tackier, and the rolling grade means it drains at a steady clip. Loam models this exact ground against live weather rather than using one regional forecast.

When is the best time of year to ride Joaquin Miller?

There is no real off-season at Joaquin Miller: snow rarely interferes, so good days come down to rain and how fast the dirt dries. The live verdict above reflects today.