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Castlewood State Park

Mountain bike trail conditions · St. Louis, MO 38.553° N  90.545° W   440 FT Verified

DRY: Rideable

No significant rain in the forecast.

Recent rain
0.2″ of rain, 7d ago
Today
76°Fclear
  • Mon 10/12, no measurable rain, daily high 91 degrees Fahrenheit, modeled conditions: DRY
  • Tue 10/13, no measurable rain, daily high 92 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/14, 0.10 inches of rain, daily high 75 degrees Fahrenheit, modeled conditions: DRY then CAUTION then DRY
  • Thu 10/15, 0.21 inches of rain, daily high 81 degrees Fahrenheit, modeled conditions: DRY then CAUTION then DRY
  • Fri 10/16, no measurable rain, daily high 58 degrees Fahrenheit, modeled conditions: DRY
  • Sat 10/17, no measurable rain, daily high 60 degrees Fahrenheit, modeled conditions: DRY
  • Sun 10/18, no measurable rain, daily high 67 degrees Fahrenheit, modeled conditions: DRY
  • Mon 10/19, no measurable rain, daily high 71 degrees Fahrenheit, modeled conditions: DRY
  • Tue 10/20, no measurable rain, daily high 73 degrees Fahrenheit, modeled conditions: DRY
  • Wed 10/21, no measurable rain, daily high 76 degrees Fahrenheit, modeled conditions: DRY
  • Today, Thu 10/22, no measurable rain, daily high 76 degrees Fahrenheit, modeled conditions: DRY
  • Fri 10/23, no measurable rain, daily high 75 degrees Fahrenheit, modeled conditions: DRY
  • Sat 10/24, no measurable rain, daily high 76 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 71 degrees Fahrenheit, modeled conditions: DRY, forecast preview, beyond the free window
Updated

Updated Thursday, October 22nd, 2026 at 19:42 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 Castlewood State Park rideable today?

Yes. The live verdict is DRY, rideable now. 0.2″ of rain, 7d ago.

CHANGED
Thursday, October 15th at 2pm
Dried back to DRY.
Thursday, October 15th at 7am
Rain moved in. Verdict dropped to CAUTION.
Wednesday, October 14th at 8am
Dried back to DRY.
Over the tracked history, Castlewood State Park has been rideable on 9 of the last 10 days, and under a caution advisory on 1. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Castlewood State Park

Castlewood State Park is a mountain bike trail network in St. Louis, MO. Soil data at the sampled location is classified as loam. Dense tree cover can reduce sun and wind exposure, slowing drying. Terrain data indicates an elevation of about 440 ft, an average terrain slope of 1.1° and a predominant NW-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. The model uses surveyed water-retention values, not measured trail recovery times.

CanopyDense 83%

Dense tree cover can reduce sunlight and wind at ground level, slowing drying. Its effect depends on weather and local openings.

TerrainGentle

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

FAQ

Can you ride Castlewood State Park right now?

The current estimate for Castlewood State Park is DRY: rideable. Rideable now. No significant rain in the forecast. 0.2″ of rain, 7d ago.

Is Castlewood State Park muddy right now?

Loam currently estimates dry conditions (DRY). 0.2″ of rain, 7d ago.

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

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 Castlewood State Park take to dry after rain?

Castlewood 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 Castlewood State 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.

What does a frozen condition mean at Castlewood 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 Castlewood State Park?

Terrain data indicates an elevation of about 440 ft, an average terrain slope of 1.1° and a predominant NW-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
Terrain
Gentleterrain slope
Tree cover
83%Dense
Elevation
440 ft
Average grade
1.1°
Predominant aspect
NW-facing

Around Castlewood State Park

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Trail stewards

Trail work here is done by Gateway Off-Road Cyclists. Support your local builders.