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Fullerton Loop

Mountain bike trail conditions · Orange County & Inland Empire, CA 33.882° N  117.929° W   249 FT Verified

DRY: Rideable

No significant rain in the forecast.

Recent rain
0.1″ of rain, 18h ago
Today
71°Fpartly cloudy
  • Mon 10/12, 0.26 inches of rain, daily high 69 degrees Fahrenheit, modeled conditions: CAUTION then DRY
  • Tue 10/13, no measurable rain, daily high 78 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/14, no measurable rain, daily high 85 degrees Fahrenheit, modeled conditions: DRY
  • Thu 10/15, no measurable rain, daily high 93 degrees Fahrenheit, modeled conditions: DRY
  • Fri 10/16, no measurable rain, daily high 96 degrees Fahrenheit, modeled conditions: DRY
  • Sat 10/17, no measurable rain, daily high 90 degrees Fahrenheit, modeled conditions: DRY
  • Sun 10/18, no measurable rain, daily high 88 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/19, no measurable rain, daily high 86 degrees Fahrenheit, modeled conditions: DRY
  • Tue 10/20, no measurable rain, daily high 82 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/21, 0.07 inches of rain, daily high 78 degrees Fahrenheit, modeled conditions: DRY then CAUTION then DRY
  • Today, Thu 10/22, no measurable rain, daily high 71 degrees Fahrenheit, modeled conditions: DRY
  • Fri 10/23, no measurable rain, daily high 74 degrees Fahrenheit, modeled conditions: DRY
  • Sat 10/24, no measurable rain, daily high 79 degrees Fahrenheit, modeled conditions: DRY
  • Sun 10/25, no measurable rain, daily high 83 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/26, no measurable rain, daily high 87 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
  • Tue 10/27, no measurable rain, daily high 83 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
Updated

Updated Thursday, October 22nd, 2026 at 20:26 UTC. Verdict last changed: Thursday, October 22nd. Official closures and current trail conditions take priority.

Modeled hourly. Closures and local conditions take priority.

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Is Fullerton Loop rideable today?

Yes. The live verdict is DRY, rideable now. 0.1″ of rain, 18h ago.

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

Soil and terrain at Fullerton Loop

Fullerton Loop is a mountain bike trail network in Orange County & Inland Empire, CA. Soil data at the sampled location is classified as sandy. Open tree cover can allow more sun and wind exposure, helping drying. Terrain data indicates an elevation of about 249 ft, an average terrain slope of 1° and a predominant SE-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

SoilSandy

Sandy soil generally allows water to drain readily. Rainfall, shade and trail construction also affect recovery. The model uses surveyed water-retention values, not measured trail recovery times.

CanopyOpen 22%

Open tree cover can allow more sunlight and wind to reach the ground. Terrain, weather and trail construction also affect drying.

TerrainGentle

Gentle terrain can allow water to linger, but slope alone does not establish whether water pools on a trail.

FAQ

Can you ride Fullerton Loop right now?

The current estimate for Fullerton Loop is DRY: rideable. Rideable now. No significant rain in the forecast. 0.1″ of rain, 18h ago.

Is Fullerton Loop muddy right now?

Loam currently estimates dry conditions (DRY). Sandy soil usually drains quickly. 0.1″ of rain, 18h ago.

What is the soil and trail surface like at Fullerton Loop?

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

How long does Fullerton Loop take to dry after rain?

Fullerton Loop 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 Fullerton Loop after rain?

Sandy soil can help drainage, but heavier rain, shade and the trail surface also affect recovery. 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 Fullerton Loop?

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 Fullerton Loop?

Terrain data indicates an elevation of about 249 ft, an average terrain slope of 1° and a predominant SE-facing aspect. Terrain slope does not measure the trail tread or its drainage features.

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Network profile

Network profile

Soil
Sandydrainage input
Terrain
Gentleterrain slope
Tree cover
22%Open
Elevation
249 ft
Average grade
1°
Predominant aspect
SE-facing

Around Fullerton Loop

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