Great Redwood Trail Agency

The GRTA was established in 2021. The 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). The Great Redwood Trail is a 320-mile, world-class, multi-use