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Thermalito to Ridgeline Trail Loop route map
Difficulty: ModerateLoop

Thermalito to Ridgeline Trail Loop

Sunol, California

5.1 mi

Distance

1,188 ft

Elev. Gain

2h 12m

Est. Time

Loop

Route Type

Moderate

Difficulty

About This Trail

Thermalito to Ridgeline Trail Loop is a loop trail in Alameda County, California. It is 5.1 miles long and gains 1,188 feet. It is in or next to Sunol, California.

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:106 ft
Max:396 ft
Gain:362 ft
Loss:362 ft
Elevation profileA line rising and falling between 106 ft and 396 ft across 5.1 mi along the route, drawn from start to end.106 ft203 ft299 ft396 ft0.0 mi1.3 mi2.5 mi3.8 mi5.1 mi

Elevation at the labelled points along this route
PointDistance from startElevation
Start0.0 mi106 ft
High point2.5 mi396 ft
End5.1 mi106 ft

Trail Details

Route Type
Loop

Official sources & verification

Verify before you go

Where it is

Nearest town:
Sunol, CA · in or next to town
County:
Alameda County, CA

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: May 23, 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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Legacy import — verify before navigating

Path geometry came from our pre-launch legacy database. Routes have not yet been re-verified against the operator and may differ from the actual trail.

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