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Hiking trails & Routes
United States
California
Marin County

428 Trail

Moderate

2.6

(20)

68

hikers

428 Trail

02:22

5.94km

470m

Hiking

Hike the moderate 428 Trail in Mount Tamalpais State Park, gaining 1552 feet over 3.7 miles with views of Bolinas Lagoon.

Last updated: February 26, 2026

Waypoints

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1

2.93 km

View of Bolinas Lagoon from 428 Trail

Highlight • Viewpoint

The views from the top of 428 Trail are very similar to Mckennan Gulch Trail. You can see the Bolinas Lagoon below, and if you look very closely on a clear day, the North Farallon Islands are way off in the distance.

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5.94 km

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Way Types & Surfaces

Way Types

5.93 km

Surfaces

5.93 km

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Elevation

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Weather

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Today

Monday 13 July

24°C

15°C

0 %

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Max wind speed: 11.0 km/h

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Frequently Asked Questions

What is the difficulty level of the 428 Trail?

The 428 Trail is rated as moderate. With an elevation gain of approximately 473 meters over its 5.9-kilometer length, it offers a good workout without being overly strenuous, making it suitable for hikers with some experience.

How long does it typically take to hike this trail?

Hikers can expect to complete the 428 Trail in about 2 hours and 22 minutes. This duration can vary based on your pace, stops for photos, and breaks.

What kind of terrain can I expect on the route?

Given its location in Mount Tamalpais State Park and moderate difficulty, you can expect varied terrain, likely including dirt paths, some rocky sections, and potentially some stairs or steeper inclines. The elevation gain suggests a good mix of uphill and downhill sections.

Are dogs allowed on the 428 Trail?

Regulations for dogs in Mount Tamalpais State Park generally require them to be on a leash no longer than six feet and restrict them from certain trails. It's best to check the official Mount Tamalpais State Park website for the most current and specific rules regarding dogs on the 428 Trail before your visit.

What is the best time of year to hike the 428 Trail?

The 428 Trail, like much of Mount Tamalpais State Park, is enjoyable year-round. Spring brings wildflowers and lush greenery, while fall offers clear views. Summer can be warm, so an early start is recommended. Winter hiking is also possible, but be prepared for potentially wet and muddy conditions after rain.

Are there any viewpoints or notable features along the way?

Yes, a significant highlight along the route is the View of Bolinas Lagoon from 428 Trail. This spot offers stunning panoramic vistas that are well worth the effort.

Does the trail intersect with other well-known paths?

Yes, the 428 Trail connects with several other routes. Sections of the trail overlap with the ADT - California - T - Seg 9, the Bay Area Ridge Trail - 01 - North Bay, the Marin Coastal Bike Route, and the Coastal Trail, offering opportunities for longer or connecting adventures.

Do I need a permit or is there an entrance fee for Mount Tamalpais State Park?

Mount Tamalpais State Park typically has day-use fees for parking. While specific hiking permits are generally not required for day hikes on established trails, it's always a good idea to check the official California State Parks website for the latest information on fees and any specific regulations for the park.

Where can I park to access the 428 Trail?

Access points and parking for trails within Mount Tamalpais State Park vary. For the 428 Trail, you'll want to look for designated parking areas near its trailheads within the park. Checking a detailed map or the park's official website before your visit will provide the most accurate parking information.

Is the 428 Trail suitable for beginners or families with children?

Rated as moderate, the 428 Trail might be a bit challenging for absolute beginners or very young children due to its elevation gain. However, active families or beginners looking for a good challenge could find it rewarding. Consider your group's fitness level before embarking on this hike.

What should I bring for a hike on this trail?

For a moderate hike like the 428 Trail, essential items include plenty of water, snacks, appropriate hiking shoes, layers of clothing (as weather can change), sun protection (hat, sunscreen), and a map or GPS device. A camera is also recommended for the scenic viewpoints.

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