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United States
California
San Mateo County

Bald Knob and Irish Ridge Trail

Easy

4.7

(9224)

14,120

hikers

Bald Knob and Irish Ridge Trail

01:20

4.57km

80m

Hiking

Hike the easy Bald Knob and Irish Ridge Trail for 2.8 miles through misty redwood forests and open ridges with Pacific Ocean views.

Last updated: February 26, 2026

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Your route passes through protected areas

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Waypoints

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Start point

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B

4.57 km

End point

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Way Types & Surfaces

Way Types

4.57 km

Surfaces

2.54 km

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Elevation

Elevation

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Highest point (560 m)

Lowest point (400 m)

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Today

Friday 10 July

23°C

11°C

0 %

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Frequently Asked Questions

Where can I park to access the Bald Knob and Irish Ridge Trail?

The trail is located within the Purisima Creek Redwoods Open Space Preserve. While specific parking details aren't provided, you would typically access it via designated parking areas within the preserve. Be aware that there are no facilities or restrooms in this part of the preserve, so plan accordingly.

Are there any permits or entrance fees required for the Purisima Creek Redwoods Open Space Preserve?

The provided information does not indicate any specific permits or entrance fees for hiking the Bald Knob and Irish Ridge Trail within the Purisima Creek Redwoods Open Space Preserve. However, it's always advisable to check the official Midpeninsula Regional Open Space District website for the most current regulations before your visit.

Is this trail suitable for beginners?

The overall difficulty can vary. The initial Bald Knob Trail portion involves a fairly gentle climb. However, if you plan a loop incorporating Irish Ridge, be prepared for significant elevation changes, with the return journey often being predominantly uphill. Sections of Irish Ridge and Lobitos Creek Trails can be steep, with an average grade of nearly 10%. Hikers should be prepared for an uphill return.

What is the terrain like on the Bald Knob and Irish Ridge Trail?

The terrain is varied. You'll find wide sections that can be muddy and covered with wet leaves, especially after rain. The Bald Knob portion is a gentle climb through lush redwood forests with ferns and moss, sometimes rocky. The Irish Ridge Trail transitions to a grassy path that descends, at times steeply, on what was once an old dirt farm road. You'll also encounter chaparral, tanoak, madrone, and Douglas fir forests.

What kind of views can I expect along the route?

The scenery is a major highlight. The redwood forest areas are often described as 'magical' and 'misty.' While Bald Knob offers glimpses through the trees, the Irish Ridge Trail provides expansive views of the Pacific Ocean and the rolling hills of the Santa Cruz Mountains. You'll also see diverse flora, including various ferns, moss-covered logs, huckleberry, and wildflowers in spring.

What is the best time of year to hike this trail?

Spring is excellent for wildflowers. Autumn and winter are good for spotting banana slugs, and the redwood forests can be particularly misty and atmospheric. Be prepared for potentially muddy conditions after rain, especially in wider sections.

Is the Bald Knob and Irish Ridge Trail dog-friendly?

The provided information does not specify whether dogs are allowed on the Bald Knob and Irish Ridge Trail. It is recommended to check the official Purisima Creek Redwoods Open Space Preserve regulations regarding pets before your visit.

What wildlife and plants might I see?

You may spot deer, squirrels, and various birds. The trail is particularly known for its abundance of banana slugs, especially in autumn and winter. Plant life includes dense redwood forests, ferns, moss-covered logs, huckleberry, snowberry, currant, and wildflowers in spring, as well as chaparral, tanoak, madrone, and Douglas fir.

Does this trail intersect with other well-known paths?

Yes, the route also passes through sections of the Bald Knob Trail, Irish Ridge Trail, Borden Hatch Mill Trail, Grabtown Gulch Trail, and Lobitos Creek Trail, allowing for various loop or extended hiking options.

Are there any notable landmarks or features along the way?

Beyond the stunning Pacific Ocean views from Irish Ridge and the dense redwood forests, a distinctive landmark on the Lobitos Creek Trail (which can be part of a longer loop) is the 'Elbow Tree' – a huge redwood with a large branch extending like an arm with a bent elbow.

What should I consider packing for a hike on this trail?

Given the varied terrain and potential for steep sections, sturdy hiking shoes are recommended. As there are no facilities or restrooms in this part of the preserve, ensure you carry enough water and food. Layers are also advisable due to shaded redwood sections and more exposed ridge areas.

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