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Yawkey, Mahnomen, Portsmouth Unit Expansion

Project ID: CUY-YMP-001

Status: Approved (Environmental Review Complete, Construction Timeline Unknown)

Location: Cuyuna Lakes State Recreation Area, MN

Last Update: February 16, 2026

Overview

Expansion of Cuyuna Lakes MTB trail system across three units: Yawkey (expansion), Mahnomen (additional trails), and Portsmouth (up to 2 miles). Approved through environmental review in 2019 with potential for up to 50 miles of new trails.

Current Status

Status: Environmental Assessment approved, construction timeline not publicly documented

Record of Decision: June 26, 2019

Environmental review: Environmental Assessment Statement (EAS) approved, no Environmental Impact Statement (EIS) required

Project completed environmental review but construction timelines have not been publicly announced. Recent focus has been on trail maintenance and fundraising rather than new trail construction.

Project Scope

Yawkey Unit Expansion

Expansion of existing trail system in Yawkey Unit. Specific mileage and trail designs not publicly documented.

Mahnomen Unit Expansion

Additional trails in Mahnomen Unit. Will connect to existing trail network and increase riding options.

Portsmouth Unit

Potential: Up to 2 miles of new trails

Status: Part of approved expansion plan

Total potential: Up to 50 miles of new trails across all three units

Timeline

Importance

This expansion represents one of the largest potential additions to the Cuyuna Lakes MTB trail system. Up to 50 miles of new trails would significantly increase riding options, boost regional tourism, and enhance Cuyuna's reputation as a premier mountain biking destination.

Monitoring

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External Sources