LoamLoam App StoreGoogle Play

Great Brook Farm State Park

Mountain bike trail conditions · Greater Boston, MA 42.558° N  71.343° W   210 FT Verified

PRIME: Rideable now

Good window for the next ~22 hours.

Recent rain
No measurable rain in the past week
Next rain
~22h
Today
79°Fpartly cloudy

Updated Sep 12, 2026, 17:23 UTC. Modeled hourly. Unchanged for 10+ days. Official closures and current trail conditions take priority.

Last 10 daysoldest to newest

Watch conditions at Great Brook Farm State Park

Watch one network free. No account needed.

After installing, search for Great Brook Farm State Park and turn on alerts.

Already have Loam? Open this trail

Download on the App StoreGet it on Google Play

Trail outlook

Is Great Brook Farm State Park rideable today?

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

0.1″
1.3″
0.1″
FORECAST
PRIME 7d 2026-09-05: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-09-06: 0.10 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: 0.00 inches of rain, representative trail outlook PRIME
PRIME 1d 2026-09-11: 0.00 inches of rain, representative trail outlook PRIME
79° PRIME Today 2026-09-12: 0.00 inches of rain, Partly cloudy, representative trail outlook PRIME
69° STAY OFF SUN 2026-09-13: 1.30 inches of forecast rain, Heavy rain, representative trail outlook STAY OFF
73° PRIME MON 2026-09-14: 0.10 inches of forecast rain, Light rain, representative trail outlook PRIME
69° PRIME TUE 2026-09-15: 0.00 inches of forecast rain, Cloudy, representative trail outlook PRIME
79° PRIME WED 2026-09-16: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook PRIME
Modeled rain Forecast rain Above soft threshold (0.5″)
Over the tracked history, Great Brook Farm State 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 Great Brook Farm State Park

Great Brook Farm State Park is a mountain bike trail network in Greater Boston, MA. The soil here is organic. Heavy tree cover can slow drying after rain. The terrain averages a 1.1° slope at 210 ft and mainly faces SSE. Its nearly flat slopes can hold water in flat stretches.

How these factors affect drying

SoilOrganic soil

The soil survey describes organic material at this spot, not a mineral soil texture. Without measured water-retention values, the drying model uses a middle estimate for retention. Drying time is less certain; this label alone does not tell you how quickly the trail will dry.

CanopyDense 89%

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 Great Brook Farm State Park right now?

The current estimate for Great Brook Farm State Park is PRIME: rideable now. Good window for the next ~22 hours. No measurable rain in the past week.

Is Great Brook Farm State 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 Great Brook Farm State Park?

Great Brook Farm State Park has organic soil. The soil survey describes organic material at this spot, not a mineral soil texture. Without measured water-retention values, the drying model uses a middle estimate for retention. Drying time is less certain; this label alone does not tell you how quickly the trail will dry.

How long does Great Brook Farm State Park take to dry after rain?

Great Brook Farm State Park has organic soil with no fixed drying time; check the live verdict for the current estimate. Its terrain holds water in low spots, which slows it. Heavy tree cover slows drying further.

Can you ride Great Brook Farm State Park after rain?

Wait until the surface is firm and respect any posted closures. Organic soil alone does not tell you how soon that will be. Check the live verdict for the current drying estimate.

Does Great Brook Farm State Park get snow in winter?

Rarely. Great Brook Farm State Park sits low and mild enough (around 210 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 Great Brook Farm State Park?

Great Brook Farm State Park sits at roughly 210 feet, faces mostly SSE, and averages a 1.1° grade with about 89% tree cover. It is quicker to dry where it faces south, and the nearly flat terrain holds puddles in the flats.

When is the best time of year to ride Great Brook Farm State Park?

Snow rarely affects Great Brook Farm State Park. Check recent rain and allow time for the ground to dry. Its sunny aspect helps it come back fast after storms. The live verdict above reflects today.

Trail stewards, clubs and bike shops: Put live conditions on your site with a free badge that updates itself. Get the embed code →
Appearance

Loam is a rider app. The badge helps riders find it, so standard embeds are free. No account required. The snippet includes a short text link to the live conditions page; please keep it so riders can open full details. Need several networks? Build a free trail conditions widget. How Loam works and why it is free.

Network profile

Network profile

Soil
Organic soilretention estimate · modeled
Drainage
Holds waterdries slowly
Tree cover
89%Dense
Elevation
210 ft
Average grade
1.1°
Predominant aspect
SSE-facing

Around Great Brook Farm State Park