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Washington

Greywacke Trail

0.9 mi

Distance

18m

Est. Time

Point to Point

Route Type

About This Trail

Greywacke Trail is a point-to-point trail in San Juan County, Washington. It is 0.9 miles long. The surface is dirt. Per OpenStreetMap contributors, it is open to bikes and closed to horses. The nearest town is Roche Harbor, Washington, about 4 miles away in a straight line.

From the trail data on this page.

Trail Conditions

Trail Conditions

Unknown

We have no current condition data for this trail. Check with the operator before you go, and submit a report below if you've been recently.

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Elevation Profile

Min:102 ft
Max:222 ft
Gain:0 ft
Loss:120 ft
Elevation profileA line rising and falling between 102 ft and 222 ft across 0.9 mi along the route, drawn from start to end.102 ft142 ft182 ft222 ft0.0 mi0.2 mi0.5 mi0.7 mi0.9 mi

Elevation at the labelled points along this route
PointDistance from startElevation
Start0.0 mi222 ft
End0.9 mi102 ft

Trail Details

Bike and horse access: OpenStreetMap contributors, checked 2026-10-14. Rules change, so confirm with the land manager before you go.

Route Type
Point to Point
Surface
Dirt

Official sources & verification

Verify before you go

Where it is

Nearest town:
Roche Harbor, WA · about 4 mi away
County:
San Juan County, WA

Nearest town and county from U.S. Census Bureau place records and county boundaries.

We display cached information from agency feeds. Hours, fees, permits, closures, fire restrictions, and conditions change without notice. Outdoors is not the permitting authority. Confirm current conditions for this trail using the links above before you go — you are responsible for compliance. Last verified by us: Aug 17, 2026. Our copy is more than a month old — please reconfirm with the agency before relying on it.Spot an error in our data?

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OpenStreetMap

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Stay nearby

Campgrounds near this trail

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