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Routes
Hiking trails & Routes
United States
California
Marin County
Larkspur

Hoo-Koo-E-Koo Loop Trail

Moderate

2.9

(20)

28

hikers

Hoo-Koo-E-Koo Loop Trail

03:05

10.3km

290m

Hiking

Hike the moderate 6.4-mile Hoo-Koo-E-Koo Loop Trail in Baltimore Canyon Open Space Preserve for diverse terrain and stunning views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Blithedale Summit Open Space Preserve

Waypoints

A

Start point

Bus stop

Get Directions

1

1.12 km

Southern Marin Line Rd Trail

Highlight (Segment) • Trail

Wide forest road following the gradual former railroad grade from Crown Road/Hoo-Koo-E-Koo Trailhead in Baltimore Canyon Open Space Preserve through pleasant redwood groves to Christmas Tree Hill in Blithedale Summit OSP.

Tip by

2

4.80 km

Dawn Falls

Highlight • Waterfall

Very small waterfall near the beginning of little Lakspur Creek

Tip by

3

5.14 km

Starting in a beautiful second-growth redwood forest, Hoo-Koo-E-Koo Trail gradually winds its way up to Mount Tamalpais, while Crown Rd/Southern Marin Line Road follows the old railroad grade toward Christmas Tree Hill.

Tip by

B

10.3 km

End point

Bus stop

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Way Types & Surfaces

Way Types

5.56 km

4.02 km

730 m

Surfaces

8.14 km

1.05 km

730 m

382 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (170 m)

Lowest point (20 m)

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Weather

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Today

Sunday 24 May

22°C

11°C

0 %

Additional weather tips

Max wind speed: 19.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How challenging is the Hoo-Koo-E-Koo Loop Trail, and are there different options?

The trail is generally rated as moderate, but its difficulty can vary significantly depending on the specific loop you choose. While the komoot route is about 10.3 km (6.4 miles) and takes around 3 hours, other loops range from an 'Easy' 9.4 km (5.8 miles) route to a 'Medium' 22.0 km (13.7 miles) option with substantial elevation gain. Some singletrack sections are rated with 'blue difficulty', indicating a moderate challenge.

Is this trail suitable for beginners?

Yes, depending on the specific route chosen. While the overall komoot route is moderate, shorter iterations, such as a 9.4 km loop starting in Kentfield, are graded as 'Easy' and can be completed in about 2 hours. These easier sections make it accessible for those new to hiking.

What kind of terrain can I expect on the route?

You'll encounter a varied mix of terrain, including flat fire roads, gravel roads, and singletrack sections. The surfaces range from natural dirt paths to paved sections. This diversity adds to the hiking experience, offering different challenges and views.

What are the best times of year to hike this trail?

The trail offers enjoyable hiking year-round. Spring brings lush greenery and wildflowers, while fall provides comfortable temperatures and clear views. Even winter can be pleasant, though conditions may vary. Summer mornings are also great to avoid the heat.

Is the Hoo-Koo-E-Koo Loop Trail dog-friendly?

Yes, the trail is very dog-friendly! Leashed dogs are welcome, making it a popular choice for pet owners looking to enjoy the outdoors with their canine companions.

Do I need a permit or pay an entrance fee for the Baltimore Canyon Open Space Preserve?

Generally, there are no specific permits or entrance fees required to access the trails within the Baltimore Canyon Open Space Preserve, where this trail is located. However, it's always a good idea to check the official Marin County Parks website for any updated regulations before your visit.

Where can I park and access the trailhead?

The trail can be accessed from various points. A common starting point is the Hoo-Koo-E-Koo & Southern Marin Line Trailhead. Parking availability can vary, so arriving earlier in the day, especially on weekends, is advisable.

What notable features or viewpoints will I encounter along the way?

The trail offers impressive scenery, including expansive views of the San Francisco Bay, the Marin peninsula, and Mill Valley, especially from higher points. You'll also pass by the beautiful Dawn Falls and traverse sections of the Southern Marin Line Rd Trail. The West Point Inn, known for its hike-in breakfast, is also a popular destination reachable from the trail.

Does the trail intersect with other well-known paths?

Yes, the route is part of a larger trail system. It intersects with and utilizes sections of several other paths, including the Southern Marin Line Road, Blithedale Ridge Fire Road, Hoo-Koo-E-Koo Trail, Dawn Falls Trail, and H Line Fire Road, among others. This allows for various route combinations.

Are there any cafes or amenities nearby?

While the trail itself is a natural escape, the nearby towns of Mill Valley and Kentfield offer various amenities, including cafes and restaurants, perfect for a post-hike refreshment. The West Point Inn, accessible via a hike, also offers a unique breakfast experience.

What kind of wildlife might I see?

The preserve is home to diverse wildlife. Hikers might spot various bird species, deer, and smaller mammals. Keep an eye out for local flora, including mature trees that contribute to the tranquil natural setting.

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