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Fifield-Cahill Ridge Trail route map
Difficulty: DifficultOut and Back

Fifield-Cahill Ridge Trail

Half Moon Bay, California

10.1 mi

Distance

2,077 ft

Elev. Gain

4h

Est. Time

Out & Back

Route Type

Difficult

Difficulty

About This Trail

Fifield-Cahill Ridge Trail is an out-and-back trail in San Mateo County, California. It is 10 miles long and gains 2,077 feet. It is in or next to Highlands, California.

From the trail data on this page. For conditions and closures, see official sources.

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.

On SFPUC Peninsula Watershed lands; access by reservation only via docent-led group excursions (Wed/Sat/Sun). Reserve through the SFPUC online system.

No recent condition reports. Be the first to share what you see on the trail.

Elevation Profile

Min:115 ft
Max:362 ft
Gain:633 ft
Loss:633 ft
Elevation profileA line rising and falling between 115 ft and 362 ft across 10.1 mi along the route, drawn from start to end.115 ft197 ft280 ft362 ft0.0 mi2.5 mi5.0 mi7.6 mi10.1 mi

Elevation at the labelled points along this route
PointDistance from startElevation
Start0.0 mi116 ft
High point6.0 mi362 ft
End10.1 mi116 ft

Trail Details

Route Type
Out & Back

Permit required

Apply through the issuing agency. Many systems run seasonal lotteries or fixed application windows — confirm current dates on the agency page.

SFPUC Peninsula Watershed; access only via reservation on docent-led guided hikes.

Get permit

Official sources & verification

Verify before you go

Reserve or permit

  • Apply for permit

    Required permit application for this trail. Many systems run seasonal lotteries or fixed application windows — confirm current dates here.

Where it is

Nearest town:
Highlands, CA · in or next to town
County:
San Mateo 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: Jun 21, 2026. Our copy is more than a month old — please reconfirm with the agency before relying on it.Spot an error in our data?

Reviews

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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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