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Griffin Bike Park

Mountain bike trail conditions · Indianapolis & Brown County, IN 39.339° N  87.367° W   623 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
0.4″ of rain, 20h ago
Today
86°Frain

Updated Sep 13, 2026, 05:26 UTC. Modeled hourly. Unchanged for 10+ days. Official closures and current trail conditions take priority.

Last 10 daysoldest to newest

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Trail outlook

Is Griffin Bike Park rideable today?

Yes. The live verdict is PRIME, rideable now. 0.4″ of rain, 20h ago.

0.5″
0.4″
0.1″
FORECAST
PRIME 7d 2026-09-05: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-09-06: 0.00 inches of rain, representative trail outlook PRIME
PRIME 5d 2026-09-07: 0.00 inches of rain, representative trail outlook PRIME
PRIME 4d 2026-09-08: 0.00 inches of rain, representative trail outlook PRIME
PRIME 3d 2026-09-09: 0.00 inches of rain, representative trail outlook PRIME
PRIME 2d 2026-09-10: 0.50 inches of rain, representative trail outlook PRIME
PRIME 1d 2026-09-11: 0.00 inches of rain, representative trail outlook PRIME
86° PRIME Today 2026-09-12: 0.40 inches of rain, Rain, representative trail outlook PRIME
84° PRIME SUN 2026-09-13: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook PRIME
80° PRIME MON 2026-09-14: 0.00 inches of forecast rain, Overcast, representative trail outlook PRIME
99° PRIME TUE 2026-09-15: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
93° PRIME WED 2026-09-16: 0.10 inches of forecast rain, Light rain, representative trail outlook PRIME
Modeled rain Forecast rain Above soft threshold (0.5″)
Over the tracked history, Griffin Bike Park has been rideable on 10 of the last 10 days. Each daily marker shows the expected daytime condition. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Griffin Bike Park

Griffin Bike Park is a mountain bike trail network in Indianapolis & Brown County, IN. The soil is gravelly loam and drains fast. Heavy tree cover can slow drying after rain. The terrain averages a 1.4° slope at 623 ft and mainly faces NW. Its nearly flat slopes can hold water in flat stretches.

How these factors affect drying

SoilGravelly loam

About 31% of this ground is rock fragments, so water runs through it faster than the soil type alone suggests. It dries quicker than plain loam. The soil type here is classified, but the exact drying speed is modeled from that classification rather than measured directly at this spot.

CanopyDense 83%

Heavy tree cover shades the soil and blocks wind, so these trails dry slowly and can hold morning damp even after dry days.

TerrainHolds water

Water tends to pool and linger here rather than running off, so the surface can stay damp well after the weather clears.

FAQ

Can you ride Griffin Bike Park right now?

The current estimate for Griffin Bike Park is PRIME: rideable now. No significant rain in the forecast. 0.4″ of rain, 20h ago.

Is Griffin Bike Park muddy right now?

Loam currently estimates dry conditions (PRIME). 0.4″ of rain, 20h ago.

What is the soil and trail surface like at Griffin Bike Park?

Griffin Bike Park sits on gravelly loam soil that drains fast. About 31% of this ground is rock fragments, so water runs through it faster than the soil type alone suggests. It dries quicker than plain loam. The soil type here is classified, but the exact drying speed is modeled from that classification rather than measured directly at this spot.

How long does Griffin Bike Park take to dry after rain?

Griffin Bike Park usually needs about a day or two to dry after meaningful rain. Its terrain holds water in low spots, which slows it. Heavy tree cover slows drying further.

Can you ride Griffin Bike 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 Griffin Bike Park get snow in winter?

Rarely. Griffin Bike Park sits low and mild enough (around 623 ft) that snow seldom affects riding; conditions are driven by rain and drying. Loam still flags FROZEN on the rare freeze.

What's the terrain and elevation like at Griffin Bike Park?

Griffin Bike Park sits at roughly 623 feet, faces mostly NW, and averages a 1.4° grade with about 83% tree cover. It is exposed to afternoon sun, and the nearly flat terrain holds puddles in the flats.

When is the best time of year to ride Griffin Bike Park?

Snow rarely affects Griffin Bike 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
Gravelly loamdrains fast · modeled
Drainage
Holds waterdries slowly
Tree cover
83%Dense
Elevation
623 ft
Average grade
1.4°
Predominant aspect
NW-facing

Around Griffin Bike Park