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Mammoth Mountain

Mountain bike trail conditions · California 37.633° N  119.013° W   9,331 FT Verified

FROZEN: Snow covered

Saturday, October 24th at 2am Changes to Dry.

Recent rain
No measurable rain in the past week
Today
35°Fsnow
  • Mon 10/12, no measurable rain, daily high 35 degrees Fahrenheit, modeled conditions: DUSTY then DRY
  • Tue 10/13, no measurable rain, daily high 37 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/14, no measurable rain, daily high 51 degrees Fahrenheit, modeled conditions: DRY
  • Thu 10/15, no measurable rain, daily high 53 degrees Fahrenheit, modeled conditions: DRY
  • Fri 10/16, no measurable rain, daily high 55 degrees Fahrenheit, modeled conditions: DRY
  • Sat 10/17, no measurable rain, daily high 57 degrees Fahrenheit, modeled conditions: DRY
  • Sun 10/18, no measurable rain, daily high 54 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/19, no measurable rain, daily high 48 degrees Fahrenheit, modeled conditions: DRY
  • Tue 10/20, no measurable rain, daily high 47 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/21, no measurable rain, daily high 42 degrees Fahrenheit, modeled conditions: DRY then FROZEN
  • Today, Thu 10/22, no measurable rain, daily high 35 degrees Fahrenheit, modeled conditions: FROZEN
  • Fri 10/23, no measurable rain, daily high 34 degrees Fahrenheit, modeled conditions: FROZEN
  • Sat 10/24, no measurable rain, daily high 47 degrees Fahrenheit, modeled conditions: FROZEN then DRY
  • Sun 10/25, no measurable rain, daily high 55 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/26, no measurable rain, daily high 53 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
  • Tue 10/27, no measurable rain, daily high 51 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
Updated

Updated Thursday, October 22nd, 2026 at 19:17 UTC. Verdict last changed: Thursday, October 22nd. Official closures and current trail conditions take priority.

Modeled hourly. Closures and local conditions take priority.

Mammoth Bike Park offers lift and shuttle access. See the operator for bike park tickets and visitor information. Official trail information

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Is Mammoth Mountain rideable today?

Loam's modeled verdict is FROZEN. Check official access, operating hours, and closures before riding. No measurable rain in the past week.

CHANGED
Wednesday, October 21st at 10pm
Changed to FROZEN.
Over the tracked history, Mammoth Mountain has been rideable on 9 of the last 10 days, and snow-covered or frozen on 1. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Mammoth Mountain

Mammoth Mountain is a mountain bike trail network in California. Soil data at the sampled location is classified as loam. Open tree cover can allow more sun and wind exposure, helping drying. Terrain data indicates an elevation of about 9,331 ft, an average terrain slope of 15.6° and a predominant ESE-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

SoilLoam

Loam combines drainage with water retention. Soil type alone does not establish how long this network takes to dry. Drying behavior is modeled from the soil classification, not measured directly on the trail.

CanopyOpen 18%

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

TerrainSteep

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

FAQ

Can you ride Mammoth Mountain right now?

The current estimate for Mammoth Mountain is FROZEN: snow covered. No rideable window yet. Snow or frozen ground is affecting conditions. No measurable rain in the past week.

Is Mammoth Mountain muddy right now?

The current estimate is FROZEN. Frozen ground can become muddy as it thaws during the day. No measurable rain in the past week.

What is the soil and trail surface like at Mammoth Mountain?

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

How long does Mammoth Mountain take to dry after rain?

Mammoth Mountain 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 Mammoth Mountain 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.

What does a frozen condition mean at Mammoth Mountain?

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 Mammoth Mountain?

Terrain data indicates an elevation of about 9,331 ft, an average terrain slope of 15.6° and a predominant ESE-facing aspect. Terrain slope does not measure the trail tread or its drainage features.

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Network profile

Network profile

Soil
Loamdrainage input · modeled
Terrain
Steepterrain slope
Tree cover
18%Open
Elevation
9,331 ft
Average grade
15.6°
Predominant aspect
ESE-facing

Around Mammoth Mountain

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