Upcoming Meetings
Contact Us

A Trail For All

The Great Redwood Trail (GRT) will connect Humboldt Bay to San Francisco as a world-class rail-trail.

News & Media
Learn More

Enjoy California’s
Iconic Landscapes

Old-growth redwoods, oak woodlands, and 70+ miles along the Eel River Canyon.

Strengthen
Community Connections

Creating safe routes to schools, parks, jobs, and local main streets.

Support
Environmental Restoration

Railroad debris cleanup, fish passage, and native habitat recovery.

Experience a Trail for All

The Great Redwood Trail Agency (GRTA) is a public agency that develops and manages the Great Redwood Trail (GRT) in Humboldt, Mendocino, and Trinity counties.

300miles, bay to bay
3counties served
70+miles along the Eel River

The Eel River Canyon

70+ miles along the Eel River through remote, rugged backcountry terrain.

Historic Rail Heritage

Historic tunnels and bridges open up sweeping views found nowhere else.

Shaped by Its Communities

The GRT offers experiences shaped by the communities and landscapes it passes through.

Everyday Connections

In Mendocino and Humboldt counties, the trail links people to schools, jobs, parks, and local destinations.

The Great Redwood Trail - Ukiah

SF Bay → Humboldt Bay

Learn More

Impact of the Trail

The Great Redwood Trail - Mendocino County

Economic Benefits & Community Life

The multi-use, 320-mile trail will generate millions of dollars for local economies and create new jobs, while allowing hikers, cyclists, equestrians, and mobility device users a safe way to experience the region.
The Great Redwood Trail - Humboldt County

Connected Trail Network

We’ll link isolated communities through one continuous corridor, complete with wayfinding, trailheads, and direct connections to your local streets.
The Great Redwood Trail - Sonoma County

Environment

We’re cleaning up railroad debris, restoring fish passage and native vegetation to build long-term climate resilience, while partnering with local Tribes to protect cultural sites and share their history along the trail.

Currently Building Your Trail

Curious what we’re working on right now? View the active trail projects under development by GRTA and partners.

View Our Active Projects

About GRTA

GRTA’s service area is the former North Coast Railroad Authority (NCRA) rail corridor in Mendocino, Trinity, and Humboldt Counties. The rail corridor in Sonoma and Marin Counties was transferred to Sonoma–Marin Area Rail Transit (SMART) in 2022.

Learn More About GRTA
Great Redwood Trail Agency - Staff Page

See Where We’ve Been Featured

Read Our Latest Coverage

Sign Up for Email Updates

Subscribe to our newsletter for updates, action alerts, and opportunities to get involved.

Sign Up for Email Updates

Common Questions

Are you a neighboring land owner? A trail advocate?

5
3
We have dedicated resources for neighbors, advocates, and community partners — from railbanking questions to volunteer opportunities. Find your path to get involved.

How do I access board agendas?

5
3
Current and past agendas are posted through our agenda portal, along with meeting minutes and archives. View the most recent agenda.
Skip to content