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Del Valle Regional Park

Mountain bike trail conditions · Bay Area, CA 37.594° N  121.716° W   1,014 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
No measurable rain in the past week
Today
76°Fclear

Updated Sep 5, 2026, 13:33 UTC. Modeled hourly. Verdict last changed: Sep 1. Official closures and current trail conditions take priority.

Last 10 daysoldest to newest

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Trail outlook

Is Del Valle Regional Park rideable today?

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

FORECAST
PRIME 7d 2026-08-29: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-08-30: 0.00 inches of rain, representative trail outlook PRIME
DUSTY 5d 2026-08-31: 0.00 inches of rain, representative trail outlook DUSTY
PRIME 4d 2026-09-01: 0.00 inches of rain, representative trail outlook PRIME
PRIME 3d 2026-09-02: 0.00 inches of rain, representative trail outlook PRIME
PRIME 2d 2026-09-03: 0.00 inches of rain, representative trail outlook PRIME
PRIME 1d 2026-09-04: 0.00 inches of rain, representative trail outlook PRIME
76° DUSTY Today 2026-09-05: 0.00 inches of rain, Clear, representative trail outlook DUSTY
73° DUSTY SUN 2026-09-06: 0.00 inches of forecast rain, Clear, representative trail outlook DUSTY
85° DUSTY MON 2026-09-07: 0.00 inches of forecast rain, Clear, representative trail outlook DUSTY
91° DUSTY TUE 2026-09-08: 0.00 inches of forecast rain, Overcast, representative trail outlook DUSTY
94° DUSTY WED 2026-09-09: 0.00 inches of forecast rain, Cloudy, representative trail outlook DUSTY
No measurable rain in the window. Over the tracked history, Del Valle Regional Park has been rideable on 10 of the last 10 days (very dry and dusty on 2 of them). Each daily marker shows the expected daytime condition. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Del Valle Regional Park

Del Valle Regional Park is a mountain bike trail network in Bay Area, CA. The soil is loam and drains well. With little tree cover, the ground gets plenty of sun and wind. The terrain averages a 4.1° slope at 1,014 ft and mainly faces WSW. Its gentle slopes drain slowly, so low spots can stay soft after rain. Trails here include Maquire Peaks Loop, Maguire Peak Trail and Flag Hill Loop Trail.

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.

CanopyOpen 18%

Little tree cover means full sun and wind, so these trails are among the fastest to rebound after rain.

TerrainModerate

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

FAQ

Can you ride Del Valle Regional Park right now?

The current estimate for Del Valle Regional Park is PRIME: rideable now. No significant rain in the forecast. No measurable rain in the past week.

Is Del Valle Regional Park muddy right now?

Loam currently estimates dry conditions (PRIME). No measurable rain in the past week.

What is the soil and trail surface like at Del Valle Regional Park?

Del Valle Regional Park 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 Del Valle Regional Park take to dry after rain?

Del Valle Regional Park usually needs about a day or two to dry after meaningful rain. Its terrain drains at a moderate pace.

Can you ride Del Valle Regional Park 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 Del Valle Regional Park get snow in winter?

Rarely. Del Valle Regional Park sits low and mild enough (around 1,014 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 Del Valle Regional Park?

Trails at Del Valle Regional Park include Maquire Peaks Loop, Maguire Peak Trail, Flag Hill Loop Trail, Welch - Flag Hill Trail and Vista Grande Road. 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 Del Valle Regional Park?

Del Valle Regional Park sits at roughly 1,014 feet, faces mostly WSW, and averages a 4.1° grade with about 18% tree cover. It is exposed to afternoon sun, and the gentle terrain leaves low spots soft after storms.

When is the best time of year to ride Del Valle Regional Park?

Snow rarely affects Del Valle Regional Park. 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
Moderateeven drying
Tree cover
18%Open
Elevation
1,014 ft
Average grade
4.1°
Predominant aspect
WSW-facing

Named trails

  • Maquire Peaks Loop
  • Maguire Peak Trail
  • Flag Hill Loop Trail
  • Welch - Flag Hill Trail
  • Vista Grande Road

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

Around Del Valle Regional Park